For anyone still monitoring I decided to bring up the TSB when I took it in for 30k service. The TSB does exist, if you have a toyota case filed the system isnt registering that this TSB is the resolution. They didnt even know it existed till I told them. Anyway they replaced the transmission and computer and I have been driving on it for two weeks now. So far I think for the most part it is fixed. I say the most part because every once in a while in stop and go traffic when you accelerate slowly I think I feel a tiny hint of it. It also appears to not be consistent if it does happen. Keeping my fingers crossed that I dont experience this issue again. If I remember correctly the TSB does apply to 2010, 2011 and some 2012 models.
Did you have any issues after they replace the tranny? Brought my truck in for 25,000 mile service and complained about the harsh shifting and the clunk/thump noise coming back after they replace it last year. So they called me today and said they will be replacing my tranny. I really am not very happy about this.