Sony is doing it again, leaving fans and industry observers scratching their heads in bewilderment. Although T-Mobile's removal of the Xperia Z3 last April turn to out to be a false alarm, the unlocked Xperia Z3 Compact might not be so lucky. Sony has just put its last mini flagship under the discontinued section of its online store with nary an explanation nor a clue. Normally, discontinuing products heralds the arrival of a successor. But the way Sony has been acting these days, it's getting hard to tell what the Japanese OEM is really up to.