I don't believe it for a second, but if it is true, this could bring people to Sony in droves:
I do believe that they would release two new FF DSLRs. Maybe a weather-sealed built in grip like the 1D/D3 for more than the A900, and one for less than the A900. But I would be shocked to see something less than $2000.
Cool idea though. That and a few really good primes would do a lot for Sony.