Yes I have now seen that on ebay..very cheap..10k or so.
But the square sensor does not really suit me..would rather more options.
Looking like current rolleis not supported by phase (with above exception) or leaf.
Not to worry..contax here I go!
I once had a conversation wiht some very nice Phase One folks about the Rollei and Phase One back. The guy I talked to had an Xact camera, which he used with Phase One backs, and even took it backpacking. But he acknowledged that Rollei was very concerned about focus, alignment and inter-connection between camera and the back, and thus their solution was the package deal with the P-20 back. They wanted more careful control over the physical alignment of the two, and given issues with the DMR and the R8/9, they may well be right.
Don't know if there are Phase One adapters, but there are adapters for Imacon backs (now Hassy), and for Jenoptik. But of course, the best is to wait for the Hy6, or to get a 6008AF coupled with the Sinar (Jenoptik) Emotion bundle.