Here's whatsnew:
-Fixed serious bug in S-SMP incw and decw instructions -- fixes sound bug in Emerald Dragon
-Added Nach's MinGW fixes -- can now be compiled with MinGW/GCC3 or MinGW/GCC4
-Fixed const char* cast warnings in GCC 4.2, thanks to [vEX] for the feedback
-Updated source to use latest libraries for libco, libui, etc.
-Added new advanced options to adjust aspect ratio correction
-Cleaned up source code a bit

Get it here:
http://byuu.cinnamonpirate.com/?page=bsnes

-Trebor