If you have a Nexus One, it most certainly will. Unlike the G1 or MT3G phones, T-Mobile doesn't have anything to do with the image on a N1, mainly because you

If you have a Nexus One, it most certainly will. Unlike the G1 or MT3G phones, T-Mobile doesn't have anything to do with the image on a N1, mainly because you bought it directly from Google instead of T-Mobile. I expect my N1 to be one of the devices to have the official 2.2 update from Google.