We recently reviewed the global (HSPA+) version of HTC's Windows Phone 8X, the first handset to cross our desks running Microsoft's newly minted mobile OS. Starting today you'll be able to purchase HTC's 8X for AT&T, which features the same exquisite design but adds LTE and a dash of carrier flavor. Pricing with a two-year commitment is $100 for the 8GB model (available in California Blue and Limelight Yellow) and $200 for the 16GB version (blue only) -- i