Neither Nokia nor T-Mobile USA are spilling too many beans on the Lumia 521, but needless to say, it's heading exclusively to Señorita Magenta in the near future. Announced in a blurb here at Mobile World Congress, the Windows Phone 8 handset will connect to T-Mob's HSPA+ network, and the carrier swears that it'll "embody a range of high-end features at an affordable price." Of course, additional details -- including device availability and specifics on pricing -- are being kept under wraps until a heretofore undefined date. We'll be sure to share more