Have a feeling it'll be either Kanye or Frank Ocean.
KimYe, irritating as they are, are very smart when it comes to press storms. So, between the new baby and Kanye recently claiming that he's still working on the music, it makes sense if it's him.
Frank Ocean would be a reach (calling him a superstar), but would still be a moment.
I also remember seeing a credible Hip-Hop site tweeting something to the effect of Def Jam having a lot of tricks up their sleeves this December. It's clearly not been with August Alsina or Jeremih lol....and both Kanye and Frank are Def Jam.