As expected, T-Mobile has also announced their Galaxy S II tonight as well. We don't yet have all the details and specs, but we do have a statement from T-Mobile:
T-Mobile USA, Inc. is pleased to announce the upcoming availability of the Samsung Galaxy S™ II at T-Mobile this fall. Featuring a brilliant 4.52-inch Super AMOLED Plus touch screen – one of the largest screens available on a Galaxy S II device – T-Mobile’s Galaxy S II promises to keep customers entertained and connected while on the go. We look forward to sharing more information in the coming weeks.
Of course we're at the Samsung event in New York, covering it live. If any details come out, you can find them here!