We came full circle when the Tomb Raider reboot was trying to be uncharted and now it seems that we've looped back around and come full circle once more with Uncharted 4 looking a lot like the Tomb Raider reboot.
There is no denying that it looks a lot like the Tomb Raider reboot. It certainly looks like Drake is stranded on an open world island, exactly like tomb raider.
The game definitely looks amazing but I don't think Uncharted needed to go open world. Part of the appeal of uncharted is the varied environments and globe trotting aspects of the game.