Unless someone sends me an N900 I dont have any intention to port it to fremantle, although I'm sure it wont take much time.

The code is freely available at github but it's based on v4.1, and the 5.1 is already released.

I'm willing to help anyone who may want to build it for fremantle.
And dont forget that I has almost zero linux experience when I decided to build a maemo4 version.