Out tomorrow 29th (was the 28th when this was posted)
http://chanka.emulatronia.com/
I've got it on very good authority that this is the real deal
Recommended specs:
P4 or Athlon XP (2ghz or higher)
Graphics card capable of pixel shaders desirable but not essential, must be of good quality though
WinXP (it may also work on 2K, not sure)