Lenovo Vibe Z2 Pro is official: a sleek metal phablet with QHD resolution

Lenovo's Vibe Z2 Pro smartphone that we saw leak back in May has become official, with the company introducing its high-end offering and all that comes with it. This new flagship has quite a bit to offer, and though it isn't entirely clear yet where the phone will be launching first and how much it will cost, we've got all …