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The codename for LÖVE 0.9.0 is Baby Inspector. It is currently released.

Major changes from 0.8.0

• Added three new modules: love.window, love.math, and love.system.
• Reworked the love.joystick and love.thread modules.
• Added new features to love.graphics, including polygon meshes and vertex shaders.
• Integrated the ENet networking library via lua-enet.
• Renamed many functions to be more consistent with the rest of the API.
• Improved the performance of several APIs in love.graphics.
• And a lot more!

All changes from 0.8.0

Additions

• Added better multiplayer networking support with ENet (via the lua-enet library.)
• Added --fused command line argument, to simulate fusing.
• Added liblove.
• Added the ability to have exit values.
• Added exit value of 1 in case of error by default.
• Added basic support for the file:// URI scheme.
• Added love.timer.getAverageDelta.
• Added Data:getString.
• Added Contact:getChildren.

• Added love.filesystem.isFused.
• Added love.filesystem.getIdentity.
• Added love.filesystem.append.
• Added love.filesystem.getSize.
• Added love.filesystem.mount and love.filesystem.unmount.
• Added an optional file search order parameter to love.filesystem.setIdentity.
• Added File:isOpen and File:getMode.
• Added File:setBuffer, File:getBuffer, and File:flush.

• Added textinput event for unicode text input.
• Added love.keyboard.setTextInput and love.keyboard.hasTextInput.

• Added previously internal Rasterizer and GlyphData methods.
• Added support for UTF-8 Image Fonts.
• Added Font:getAscent, Font:getDescent, and Font:getBaseline.
• Added Font:setFilter and Font:getFilter.
• Added Font:hasGlyphs.

• Added angle, scale, and shear parameters to love.graphics.printf.
• Added support for high dynamic range (HDR) Canvases.
• Added mipmapping support to Images (has love.graphics.isSupported test).
• Added vertex shader support.
• Added boolean support to Shader:send.
• Added Canvas:getPixel.
• Added BlendMode "replace".
• Added LineJoin modes.
• Added Mesh objects, allowing for arbitrary textured polygons.
• Added multiple render target support to love.graphics.setCanvas.
• Added love.graphics.setColorMask.
• Added love.graphics.origin.
• Added love.graphics.getRendererInfo.
• Added love.graphics.getMaxImageSize.
• Added SpriteBatch:getCount and SpriteBatch:getBufferSize.
• Added SpriteBatch:getColor.
• Added ParticleSystem:emit.
• Added ParticleSystem:setInsertMode.
• Added ParticleSystem:setAreaSpread.
• Added ParticleSystem:isPaused and ParticleSystem:isStopped.
• Added many ParticleSystem getter methods.
• Added DXT compressed texture support to Images via love.image.newCompressedData.
• Added love.image.isCompressed and Image:isCompressed.
• Added Image:getDimensions, Canvas:getDimensions, and ImageData:getDimensions.
• Added anisotropic filtering support for Images, Canvases, and Fonts.
• Added Image:refresh.
• Added Image:getData.

• Added love.math module.
• Added a platform-independent (good) random implementation to love.math.
• Added RandomGenerator objects.
• Added BezierCurve objects.
• Added love.math.triangulate and love.math.isConvex.
• Added love.math.noise.

• Added love.system module.
• Added love.system.getClipboardText and love.system.setClipboardText.
• Added love.system.getOS and love.system.getProcessorCount.

• Added love.window module.
• Added love.window.isVisible.
• Added flags to love.window.setMode.
• Added monitor choosing support to love.window.setMode.
• Added support for resizable, borderless, and non-centered windows.
• Added support for "fullscreen-desktop" mode.
• Added window resize and visible events.
• Added love.window.getIcon.
• Added t.window.icon to love.conf.

• Added SoundData:getDuration and SoundData:getSampleCount.
• Added Source:isPlaying.
• Added Source:setRelative and Source:isRelative.
• Added Source:setCone and Source:getCone.
• Added Source:getChannels.

• Added new Channels API for love.thread.
• Added limited table support to Channel:push.
• Added Thread:getError.
• Added Thread:isRunning.
• Added threaderror event.

• Added love.mousefocus and love.window.hasMouseFocus.
• Added custom hardware cursor support via love.mouse.newCursor.
• Added love.mouse.setX and love.mouse.setY.

• Added Joystick objects.
• Added joystick add and remove events.
• Added joystick axis and hat move events.
• Added unified Gamepad API for joysticks which have a similar layout to the Xbox controller.
• Added joystick vibration support.

• OPTIONAL: Added support for Game Music Emu.

Removals

• Removed release mode (but Fused mode is still there.)
• Removed love.keyboard.getKeyRepeat (see love.keyboard.hasKeyRepeat).
• Removed the unicode argument from love.keypressed (see love.textinput).

• Removed love.graphics.drawTest.
• Removed love.graphics.quad and love.graphics.triangle.
• Removed ColorModes and love.graphics.setColorMode.
• Removed love.graphics.newStencil.
• Removed love.graphics.setLine and love.graphics.setPoint.
• Removed love.graphics.drawq (functionality is merged into love.graphics.draw).
• Removed SpriteBatch:addq and SpriteBatch:setq (functionality is merged into SpriteBatch:add and SpriteBatch:set).
• Removed Quad:flip.
• Removed ParticleSystem:isFull and ParticleSystem:isEmpty.
• Removed ParticleSystem:getX and ParticleSystem:getY.
• Removed love.graphics.checkMode.

• Removed love.joystick module functions which operated on individual joysticks (see Joystick objects).
• Removed joystick ball support.
• Removed thread names.
• Removed old thread messaging API (see Channels).
• Removed love.timer.getMicroTime.

Renamed APIs

• Renamed love's boot script to 'love.boot', which can be required.
• Renamed love.filesystem.mkdir to love.filesystem.createDirectory.
• Renamed love.filesystem.enumerate to love.filesystem.getDirectoryItems.
• Renamed World:setAllowSleeping and World:getAllowSleeping to World:setSleepingAllowed and World:isSleepingAllowed.
• Renamed ChainShape:setPrevVertex to ChainShape:setPreviousVertex.
• Renamed Joint:enableMotor to Joint:setMotorEnabled.
• Renamed Joint:enableLimit and Joint:isLimitEnabled to Joint:setLimitsEnabled and Joint:hasLimitsEnabled.
• Renamed t.screen to t.window in love.conf.
• Renamed love.graphics.setCaption to love.window.setTitle.
• Renamed PixelEffect to Shader (but now with vertex shaders).
• Renamed love.graphics.setDefaultImageFilter to love.graphics.setDefaultFilter.
• Renamed ParticleSystem:setSprite to ParticleSystem:setImage.
• Renamed ParticleSystem:setGravity to ParticleSystem:setLinearAcceleration.
• Renamed ParticleSystem:setLifetime and ParticleSystem:setParticleLife to ParticleSystem:setEmitterLifetime and ParticleSystem:setParticleLifetime.
• Renamed ParticleSystem:count and all getNum* functions to get*Count.
• Renamed SoundData:getBits and Decoder:getBits to SoundData:getBitDepth and Decoder:getBitDepth.
• Renamed Source:setDistance and Source:getDistance to Source:setAttenuationDistances and Source:getAttenuationDistances.
• Renamed love.mouse.setGrab to love.mouse.setGrabbed.

Fixes

• Fixed fused mode in OS X.
• Fixed printing to the console in Windows before love.load is called.
• Fixed the default love.run to not include the time taken by love.load in the first frame's dt calculation.
• Fixed the error screen not always appearing until the next input event.
• Fixed love.event.clear.
• Fixed love.mouse.setPosition when called in love.load.

• Fixed scaling in several love.physics functions.
• Fixed Box2D exception in World:update.
• Fixed many uncaught Box2D / love.physics exceptions for Bodies and Joints.
• Fixed ChainShape:getPoints running out of Lua stack space and crashing.

• Fixed File:read reading past end of file.
• Fixed love.filesystem.setIdentity not removing read access from old directories.

• Fixed possible memory leak in UTF-8 decoder.
• Fixed spacing for the last character in an Image Font.
• Fixed line wrapping in love.graphics.printf.
• Fixed love.graphics.printf to error if the wrap limit is negative.
• Fixed love.graphics.print truncating strings with embedded zeros.
• Fixed crashes with font drawing on some ATI cards.
• Fixed artifacts when drawing lines at huge scale.
• Fixed Fonts and Canvases ignoring default image filter.
• Fixed love.graphics.getLineWidth returning incorrect values.
• Fixed love.graphics.getColor on some Windows systems.
• Fixed alpha BlendMode.
• Fixed multiplicative BlendMode.
• Fixed love.graphics.getPointStyle.
• Fixed line numbers in Shader errors.
• Fixed Shader:send with Images and Canvases failing sometimes.
• Fixed Shader:send to keep a reference to sent Images and Canvases.
• Fixed crash when binding SpriteBatches multiple times.
• Fixed SpriteBatches with more than 16,384 sprites.
• Fixed draw order for ParticleSystems.
• Fixed ParticleSystem:setSizes resetting the size variation.

• Fixed love.window.getMode and friends returning wrong values when using desktop size.
• Fixed keyrepeat settings being lost after (indirect) love.window.setMode.
• Fixed the icon being reset after love.window.setMode.

• Fixed memory leak in the mp3 decoder.
• Fixed sound issues with some versions of OpenAL soft, by enabling direct channels.
• Fixed 'random' hangs in audio.
• Fixed case (in)sensitivity of sound file extension parsing.
• Fixed looping support in tracker music formats.
• Fixed skipping/looping issues when playing streaming audio Sources.
• Fixed a race condition in Source:play.
• Fixed WAVE sound playback.

Other Changes

• Moved love's startup to modules/love.
• Moved window-related functions from love.graphics to love.window.

• Updated functions which return LOVE objects to re-use the Lua-side object instead of always recreating it.

• Updated the windows console, it now tries to re-use an active one first.
• Updated error handling, error handlers now get resolved when the error occurs.
• Updated order of sleep/present in love.run (now draws, *then* sleeps).

• Updated love.keyboard.setKeyRepeat to take a boolean argument instead of numbers.
• Updated love.keypressed's second argument to indicate whether the keypress is a repeat.
• Updated keyboard key constants with some modern keyboard keys.

• Updated love.filesystem to try to create the appdata directory if it doesn't exist yet.
• Updated the default filesystem identity to omit file extension.
• Updated love.filesystem.newFile to optionally open the file.
• Updated most love.filesystem functions to return nil, error on internal failure.

• Updated love.graphics.print's x and y arguments to default to 0.
• Updated the setFilter and setWrap methods, the second argument is now optional.
• Updated Font and ParticleSystem rendering code, now more performant.
• Updated SpriteBatch code, now more performant when adding/setting and (un)binding.
• Updated Canvas code to support more systems.
• Updated Canvas:getImageData and love.graphics.newScreenshot to be more efficient.
• Updated love.graphics.newScreenshot to create a fully opaque image by default.
• Updated error messages when sending bad values to Shaders.
• Updated love.graphics.newParticleSystem to have a default buffer size of 1000.

• Updated love.image.newImageData and love.graphics.newImage to accept FileData.
• Updated ImageData:setPixel to accept a table and default to 255 alpha.
• Updated ImageData:mapPixel, is now more efficient and now accepts optional x,y,w,h arguments.
• Updated love.image memory handling, improves errors and thread-safety.

• Updated love.audio.newSource, love.sound.newDecoder, and love.sound.newSoundData to accept FileData.
• Updated allocation for SoundData, it's more efficient and less wasteful.
• Updated SoundData:setSample and SoundData:getSample to error for invalid samples.
• Updated Source:set* functions to default z to 0.
• Updated Source:seek to error for negative offsets.

• Updated Thread:start to accept arguments. The arguments are available in the thread via ... (the vararg expression.)

• Updated love.timer.getFPS to be microsecond-accurate.
• Updated love.timer.getTime to be microsecond-accurate and monotonic.

• Updated Box2D to version 2.3.