T-Mobile has funally made the myTouch 3G Slide official.  The new HTC handset will be launching in June for an undisclosed amount (our money is on $179.99).  the new T-Mobile myTouch 3G Slide features a 3.4 inch HVGA capacitive display, 5MP camera with autofocus and LED flash, four row QWERTY keyboard, Swype software keyboard pre-installed,…