It's out on the (Spanish) forum here for now: http://www.speksnk.org/foro/viewtopic.php?f=50&t=68078 but should be up on the official site at some point soon (when Elsemi wakes up and updates the site)!

From the readme.txt:
v0.6
So many changes that I can't remember...Lighting fixes, control fixes, sound fixes...
ManxTT is working, but sound is broken.
Merged some features from the cps3 emu (vsync, custom fullscreen res,...)