T-Mobile has just announced the new myTouch 4G Slide. We’re known about the handset for quite some time, but we now have on official spec sheet, launch timing and price.  The official specs of the myTouch 4G Slide include a four row QWERTY keyboard, 3.7-inch WVGA super LCD display, dual-core 1.2 GHz Qualcomm Snapdragon processor,…