Update: The Astound is now shipping - and it's actually free with a T-Mobile contract.
T-Mobile USA launched the Nokia Astound - a rebranded C7. The hardware is the same as the C7 but Nokia made some changes to the software - added a QWERTY keyboard with Swype and upgraded the browser. The Astound also has free Ovi Maps GPS with US, Canada, Mexico and the Caribbean maps pre loaded. The Astound will start shipping on April 6 for $79.99 (with a contract, after rebate). If you don't want to wait, you can buy the C7 unlocked for $549.
The Nokia C7 is running on Symbian^3, and has a 3.5" 640x360 AMOLED display and a 8mp camera that can record 720p video. Other features include 8GB of memory, GPS and Wi-Fi.