Played with the 11/04 6.5.1 w/ Manila 2.5... I absolutely love the new setup. It's a more user friendly layout. The only reason I'll be flashing back to the 10/28 is due to the 2.5 bugs. So far, facebook integration doesn't seem to work right, the "send" button problem with sms, and the biggest drawback yet... no landscape.
But 2.5 is in it's early stages, so I'm excited to see it hit stability. I remember a time when TF3D2 was buggy, but now it's smooth as silk.
Very good work though! I don't now anything about these Manila ports, but wonder if there is a way to hybrid 2.1 and 2.5?