Samsung's Galaxy Note 4 is likely to arrive within a month, but apparently that's not soon enough to avoid an early leak. GSM Arenahas posted photos of what's believed to be Samsung's next gigantic, phablet-style smartphone. The images reveal a redesigned back cover that stays true to the Note 3's faux leather while thankfully losing the tacky fake stitching. The Galaxy S5's heart rate sensor is also carried over here and positioned next to the camera. But the most interesting thing in these shots is the Note 4's outside frame, which looks like it may actually be metal this time. And yes, it's got chamfered edges.