I guess that with the S, and the stuff on the R10 we're all assuming that the M9 will be 2011 or 2012.
I got to thinking about this. Clearly it's in Leica's interest to pre-announce the S1 and the R10, because they are not currently producing anything to compete with it.
The M9 is a different story though. If they were to say "there will be an M9 in March 2010" for instance, there would be an immediate impact on M8 sales. So they wouldn't say that would they?
On the other hand, a full frame M9 with decent high ISO is the one thing that really would have guaranteed sales, so you might imagine they would be steaming ahead with it.
I know nothing, but one is entitled to dream