Hard to say David, they are so cryptic.
I think the majority of news will revolve around the use of CMOS sensors in flagship cameras. They haven’t been coy about that. How they handle CMOS will be a critical aspect for M and S users.
The discounts for M9 cameras seem to be a clear signal that the M10 will be announced … Hasselblad did the same, then just announced the H5.
Whether there are other products to announce is a question of less importance to me personally … but a FF small EVF camera would be a good idea given that Sony and others are accelerating toward FF NEX type cameras.
The M 28/1.4 is heavily rumored, so I think that is a possibility with at least a protoype at Photokina. Maybe the S24mm?
For me, the most important announcement (or lack of announcement) will be the rumored S3. While I am fully prepared for the M10, the expense of a new S3 body is far more iffy … it will come down to either upgrading my H4 to the H5, or getting a S3 … not both.
Hasselblad did an evolutionary upgrade of many highly used technical aspects, and gave the camera a facelift. The S2 would have to be substantially upgraded to warrant a S3, and Leica has no body for body upgrade path like Hasselblad does, which makes it a bit more difficult. A CMOS based S3 with a very good ISO 3200 and decent 6400, live view and some form of multi-point AF with improved speed/accuracy would warrant the upgrade because I could off-load most 35mm DSLR gear … and then I’d probably keep the S2 as back-up.
-Marc