Remember the HTC M4? We heard the codename leaked back in February, along with some hardware specs. Now that the HTC First is official, some similarities between it and the M4 start to become apparent; both handsets use 4.3-inch 720p displays, for instance. While not all of the specs quite match up between the two, a new rumor puts forth some tweaked specs for the M4 that line up with the First closely enough to get us wondering if the M4 might be ...