The phone was announced today at a launch event, and it's the first Nokia handset with Windows Phone 7 to land Stateside. It's a lesser phone than its bigger brother, the Nokia 800, but for only $49.99 on-contract (after a mail-in rebate), you're still getting a 3.7-inch display at 480 x 800, a 1.4GHz processor, 512MB of RAM, and 8GB of internal storage.
Since Nokia and Microsoft are best friends, it also comes with Windows Phone 7.5 "Mango" and has some awesome Nokia software additions on top of that, like Nokia Concierge and Nokia Drive.
I love the way the 710 looks. It's a really great-looking piece from a hardware company that needs to, and probably will, get back in the phone game here in the US. I've noticed that, towards the end of this year, manufacturers have started to make some really fantastic hardware. Competition is fantastic, and there seems to be quite a bit of it going on now.