Engadget: So much for the "AT&T refuses to release high-end Android devices" conspiracy theory, eh? T-Mobile had been widely pegged as Samsung's launch partner for the Galaxy S in the States, but AT&T stole its thunder this morning by announcing the Captivate featuring a 4-inch Super AMOLED display, Android 2.1, 7.2Mbps HSPA, and a 1GHz Hummingbird processor.