This is the AT&T SMT5700. It’s been picked up by Engadget and it looks to be turning up in the USA sometime soon.
The Amoi-built QWERTY brings back the SMT badge which went into hiding for a while when Cingular and AT&T merged. The specs are yet to be confirmed, however rumour has it that a 2 megapixel camera and microSD slot will be present – plus the user manual shows Windows Mobile 5.
Links – FCC.gov (Via Engadget)