The phone was just updated- wouldn't expect anything in the very near future. And that's the first I've heard of Sense 3.0 officially on the Inc 2. Isn't it still running Sense 1.0 right now?
I believe you can install Sense 3.0 in a custom ROM now if you root your phone but don't quote me on that. Take a look around and see what's out there.
Stock on Inc2 is 2.1, same as Tbolt. Last I heard they had no plans on updating it. I want to say I ran an article that HTC said that the phone didn't have enough power to run anything higher.