You heard it here first, on April 15th T-mobile is going to be announcing major changes to their rate plans. We have NO idea what that means, if this is a public announcement or internal, but we know the announcement exists. On the announcement note however, Engadget is reporting that T-mobile has invited press to an event April 21st. Our invitation may have gotten lost in the mail!  Billed as a “private launch event,” the anticipation is for the next Android device combined with a cupcake announcement, or possibly the unveiling of the next gen sidekick. Could these two announcements go hand in hand or is T-mobile preparing to make the second half of April one hell of a good time? Guess only time will tell, but I think we can all agree the next few weeks could be very very exciting for the big T.