This is history moved out from README.md, which was getting a bit long.
A few issues have been discovered in the release that need fixing, the Star Ocean fix had a bug and there are some unexpected slowdowns.
Improved sceMpegRingbufferAvailableSize - UFC© Undisputed™ 2010 now playable
Improved ISO File System - Bleach Soul Carnival 2 now in-game (but freeze when in menu)
- CLUT (paletted) texturing from framebuffers supported, fixing many graphical issues like the shadows in Final Fantasy: Type-0
- More types of framebuffer copies are now handled correctly, fixing a variety of graphical issues, like the sun in Burnout and many more
- Better savedata compatibility with the real PSP
- Support for more codecs used by "Custom BGM" and sometimes regular music in games: MP3, AAC
- PMP video format support
- Implemented some strange blending modes like ABSDIFF as shaders, fixing the outlines in DBZ Tag Team and more.
- Emulation of the vrot CPU instruction improved - it caused cracks in FF3 graphics before
- Many bugfixes around the UI, touch D-pad now works better when scaled large
- Workaround implemented to support Star Ocean's stencil trickery as efficiently as possible on all platforms
- Major corrections to module loading and memory management, fixing further games
- Bulgarian and Thai language translations were contributed
- Many, many more game fixes and bug fixes
- OpenGL ES 3 detection bug on Xperia devices fixed, graphics work again.
- More accurate audio mixing and emulation
- Software rendering and display list performance improvements
- Workaround for timing issue hanging Crash Tag Team Racing
- Galician language
- Built-in ARM disassembler improvements (dev feature)
- Fix for immersive mode volume key issue on Android Kitkat
- And more minor tweaks and fixes as always.
- Some critical bugfixes (rotation, haptic feedback on Android, etc)
- Several scheduling and audio fixes, fixing black screens in Yu Gi Oh games among other things.
- Screen rotation and immersive mode support on Android
- Large improvements to the software renderer (still not really playable, but looks right more often than not)
- New VPL allocator and bugfixes, fixing Pangya Golf performance problems.
- Some mpeg/video playback fixes, fixing Parappa The Rapper and others. Some issues remain.
- Fix save state bugs causing incompatibility between 32 and 64-bit platforms.
- Symbol map/debugger improvements
- Depth buffer copy, fixing Jeanne D'arc. May cause minor slowdowns though, this will be worked around in the future.
- MsgDialog fixes. Saving fixed in numerous games.
- Initial multitouch support on Windows 8 for on-screen controls.
- Large general speed improvements and assorted bug fixes
- "Software Skinning" option which speeds up many games with animated 3D characters (but may slow down a few, like Monster Hunter games - experiment with turning it off)
- Various fixes around stencil/alpha, reducing glow problems in Wipeout and Gods Eater Burst.
- Timing improvements making more games run at the correct FPS, also fixing some audio issues
- More debugger features
- Option for four-way touch dpad, avoiding diagonal dpad issues
- Better looking and individually resizable touch controls
- Add ability to switch UMD in multi-disc games (works for most)
- Emulate PSP-2000 rather than the 1000 model by default. Not much different in practice.
- Automatic install of games from ZIP files, like demos and many homebrew.
- VERY basic ad-hoc online play support, to be improved in future versions. See below.
- Software renderer improvements
- Many, many emulation fixes:
- bezier/spline curve support, fixing LocoRoco and others
- stencil clear emulation, fixing Final Fantasy IV text
- Performance improvements in some games
- Post-processing shaders like FXAA, scanlines, vignette
- More solid save states (we will try to keep them working from now on. Save states only upgrade forward, not backward to older versions though).
- Change render resolution independently of window size
- Massive debugger improvements
- Win32 menu bar is now translatable
- Multiple UI bugs were fixed, and the UI instantly changes when a new language is selected
- Win32: Ability to store PPSSPP's config files and memory stick files in places other than the same directory
- Android-x86 support
- Unofficial port for modified Xbox 360 consoles
- Atrac3+ plugin no longer required. Symbian now supports Atrac3+ audio.
- Symbian audio and ffmpeg is now threaded for more consistent media processing.
- Haptic feedback support for mobile devices.
- Accurate system information for mobile devices.
- Qt audio has been fixed.
- Analog controller support for Blackberry.