Okay... I still don't want to be spoiled. BUT--
I do like seeing our lads (and lasses!) in their new poses. So I will try to limit myself to those as best I can.
Sherlock glaring. Sherlock using a Device (monochrome pic).
That guy we aren't supposed to ever see again? Well, here HE is posing.
Mycroft looking dapper and intent. (Which comes from a series of REALLY spoilery s3 pics over at Babble.com.)
This is setlock, of course, but since we all know about movie magic, I'm really keeping it because a) it's funny and b) Ben looks like he's having a blast. 8)