Brickset.com has now listed the new LEGO Technic sets for the 2H11.
According to this list, they will be:
- 8071 - Bucket Truck
- 8081 - Extreme Cruiser
- 8109 - Flatbed Truck
- 8110 - Unimog U400
Let me speculate a bit... Having the highest set number, this seems to be the 2011 Technic flagship, and I'd guess it is a large TrTr vehicle with lots of parts and some new cool ones...
From the indications that I've seen, its retail price will increase a bit, if we have the 8043 as a reference. Thus probably, some even more cool stuff in there.
Some images if you want to see what an Unimog U400, might be...