The Samsung Galaxy Mega series which was revealed last year saw the release of the Samsung Galaxy Mega 5.8 and Samsung Galaxy Mega 6.3, where the former has a 5.8” screen size, while the latter weighs in at 6.3”. It seems that there was also a 5.1” Samsung device that carried the model number SM-G750 that is well on its way to AT&T, where @evleaks claims that it is the Samsung Galaxy Mega 2.
Assuming the Samsung SM-G750 is the Galaxy Mega 2, there is every possibility that the rumored SM-G750F model would arrive in a larger form factor, which could be the successor to the other Galaxy Mega handset. Regardless, all that we need to do now is to sit tight and wait for something official to be released by the folks over at Samsung, and who knows, it might just happen at the Samsung Galaxy Premiere 2014 event.