Revel M22 replacement for M20?

Does anybody know if the new Revel M22 going to replace the M20? Anybody knows the release date?
to the M20 and the F32 a replacement to the F30 and the C32 to the C30. I did see pictures at my local Revel dealer and they look very similar to the F50/C50 style.
The F30 is scaled down in size and they all receive price increases. They will be out very soon as the dealer is not replacing his current stock.
What are sonic differences between them?