He's signed to MWE Music. My two guesses:
1. There are a lot of "MWE Music" labels. Perhaps the most recognizable is MWE Music Management, which is owned by Matthew Knowles, ie Beyonce's dad. They do a lot of management stuff, which would explain the professional look to his shyt. A brief youtube glance will show you some videos from 2013 that look professionally done.
2. He's on a Warner Bros under a development deal. I tend to think this is the case. Just listening to him and looking at his appearance...light skin melodic dude who raps. Sounds like someone a label would invest in and have write for artists to see what he can do.
We'll know for sure before the end of the year. If he's introduced as the next member of MMG we'll know it's Warner. Or they'll do what they did with Pill - put him in the group unofficially for buzz, then he'll go and do his own thing.