HTC's bone shaking BoomSound front facing speakers are going to come to Windows Phone later this year. The 8XT, which appears to be a slightly tweaked variant of last year's 8X, will launch on Sprint's 4G LTE network for $99.99 with a two-year contract. That's after you mail in a $50 rebate card, however. Powered by a 1.4 GHz Snapdragon 400 processor paired up with 1GB, we want to say the 8XT has the same 4.3 inch 720p screen as its older cousin, but the spec sheet in our hands merely says