Looks folks, T-Mobile is saying publicly via it's Facebook page that the Sensation ICS rollout is not ready to begin due to problems with it. The following is a copy and paste from an official post yesterday by T-Mobile in response to an inquiry regarding the ICS rollout. There are multiple posts where T-Mobile replies in a similar manner.
"T-Mobile USA we are currently testing ICS on the Sensation but it isn't the experience we are looking for so HTC is working on our feedback before we send it out and we don't have a time yet. ^KM"
If we start seeing it rollout today or even in the next week you can throw a hearty "HA HA" Nelsen style at me, until then, I've yet to be proved incorrect in my opinion.