Hi All,
I just read some good news on the Blender to Renderman forum.
http://lists.blender.org/pipermail/bf-committers/2009-July/024019.html
This is the first news I have heard that leads me to believe that we just might have Yafaray, Mosaic and Lux working with Blender 2.5:eyebrowlift:
Of course the conversion work has to be done, but it looks like the ball is rolling!
Aqsis Attempt:
http://www.pasteall.org/6671/python
Preliminary 2.5 API: