It looks like the prayers of T-Mobile fanboys might have been answered. Sony Ericsson officially unveiled the Xperia X10 on their website and check out which 3G bands it supports. Yup, this phone supports WCDMA/UMTS 1700/2100. For the non tech geeks, that means T-Mobile 3G.
Official announcement is coming from Sony Ericsson on November 3rd.
New details are coming November 3, 2009.