A brief list:
-very partial Analog+ things (working on fixing that up now)
-somewhere around 500 more games supported (maybe more)
-a whole buch of fixes and stuff
There is alot more, but I'm too lazy to open up the changelog and look. Feel free to download it yourself and look. If you have any feature suggestions, feel free to contact me. You get bonus points if you include source code to add the requested features, but its not a requirement.