Pretty clearly says T-Mobile for the carrier name at the top. A have an HTC HD2 with Froyo installed, and absolutely love the 4.3" screen. I think a 4.5" screen might actually have some tangible benefits, at least to a screen whore like me. Coupled with facetime chat and AMOLED screen, I think the Nexus S could be a good upgrade phone for anyone who doesnt already have the latest and greatest. Then again, the real benefits are probably in Gingerbread, and once I have that installed I probably wont care about anything else.