GP2x Firmware 3.0.0 has been released. This firmware mainly consists of design change and minor changes.
Update 23:52: Few people seem to complain about the new layout and it’s functionality – if you want to be on the save side, stick with the latest stable 2.x.x Firmware.

AEP-Emu (DE/EN)
DMG Page (DE)
Indie Retro News (EN)
Retroguru (EN)