This very exciting news can be heard on podcasts at The fxguide website.
http://www.fxguide.com/article423.html
The guys talk about an overhaul to the Nuke U.I and I thought it might be interesting for users to say what they would like to see in a new U.I for Nuke.
I know I'd like the transport controls in the viewer to be below the picture area not above for example.