So your next project will be a GB emulator or java for DS ? If it's Java, I just say WOOOOOO !!! Just another question on ScummVmDS. It doesn't seems that's it possible to go back to game selection after laucnhing a game. Am I wrong ?
Nope, the project is my last one, already pretty much completed, and it's a Gameboy emulator for Java. You can play GB/GBC games on a web page, including saving your game to the web server.
It also allows you to run a GB emulator on platforms that don't already have one, but can run Java apps.