Just like the Samsung Trace t519, the Samsung t719 has a coming soon page up on T-Mobile today. The flip-phone t719 has some interesting features, like the BlackBerry Connect software inside to enable this phone to use BlackBerry's push email. This means you don't need a bulky BlackBerry if all you're doing is shooting off an email once in a while.
Other features: quad-band GSM, 3 hours talk time, 1.3 megapixel camera, Bluetooth, voice dialing, mini-qwerty keypad, and PC syncing. The most interesting part would be that BlackBerry-style qwerty, which may be hard to use on a phone of this size.
Product Page [T-Mobile]