The WiFi-only HTC Flyer tablet touched down last month without a peep from Carly and pals, but those magenta-tinted marketing plans are looking far more likely now -- a GSM-based Flyer just hit the FCC with support for T-Mobile's 3G bands. Visually and functionally, it looks like the same savory slate we saw tested in April, except with the all-important 1700MHz frequ
