You might remember (emphasis on "might") that Nokia was rumored to have a 5700 XpressMusic upgrade in the works a few months back -- 3.2 megapixel autofocus cam, larger microSD expansion limit, and that's about it. Believable if not intensely boring, right? Well, a 5710 just showed up on Nokia's US site that looks an awful lot like a black 5700, and let's be real: 5710 sounds like the right model number for an ultra-mild 5700 upgrade. No official announcement yet, but yeah, we could totally see this showing up on T-Mobile at some point this year.