Based on some California Emissions applications,
Visordown thinks that it has an early scoop on the 2012 Triumphs, but only for those models that will remain largely the same from 2011.
They predict the following models will generally remain the same in 2012:
Sprint ST [even though there is no ST in the US for 2011? What?]
Sprint GT
Tiger 1050
Daytona 675
Daytona 675R
Street Triple
Street Triple R
Speed Triple
Thunderbird
Rocket
So basically, if you are interested in one of those models, no need to wait to see what 2012 will bring - just get a 2011 and start having fun already.