Here's whatsnew:
scsp:
- Fixed a timer bug.
- Fixed a bug with mcire word writes.
- Added wave file output core to available sound cores.
- Fixed a bug in total level attenuation.
- Fixed a bug in EG.
gtk port:
- Redesigned memory dump window.
- Redesigned SH2 debug window.
- Other bug fixes.
qt port:
- Added initial support. It should be pretty much on par with the gtk port.
wii port:
- Added initial support.
windows port:
- Fixed a bug where emulation wasn't paused when save/load state as was
selected from the menu.
- Changed disassembler so it can scroll up and down.
- Tweaked error messages so it doesn't report invalid opcode errors when
running the fast interpreter.
- Added SCSP common control register debug info to SCSP debug dialog
- Other bug fixes.
general:
- Added a few internal tweaks that should yield some performance gains.
- Added support for saving and loading cheats.

Get it here:
http://yabause.org/download/

-Trebor