In just one more day, May 16, the T-Mobile HTC Sensation 4G
will receive the Android 4.0 Android Ice Cream Sandwich update. This update will take place over-the-air and should alert you via your HTC Sensation 4G device. If you are not alerted, you can always go to your phone's Settings>About Phone>HTC Software Updates>Check.
Once updated, your HTC device should be running Android 4.0.3, ver. 3.32.531.14710RD, with the addition of HTC Sense 3.6.
For more info on the update and what it will bring, click here: http://support.t-mobile.com/docs/DOC-2392