From the home page:
Here's what new in this version :
- added calibration support to the gamepad driver.
- new options in the pce.ini file to control the gamepad calibration. If your gamepad doesn't work with the default values try to change these options.
- fixed a little bug in the sound emulation.
- fixed a bug in the video emulation, could freeze or crash the emulator.
- fixed a bug in the CD-DA player, could freeze the emulator.
- fixed a bug in the PCE CD-ROM detection.
- improved the windowed mode (auto centering, remember window positions, etc...).
- doesn't exit anymore if you don't have a CD-ROM drive.
and the usual tiny fixes/improvements.