Eddie Alvarez - This guy definitely has a bright future
Pat Barry - Sick leg kicks in his MMA debut and his whole kickboxing career, we'll see how he rounds out. Could be an exciting addition to the UFC heavyweight division
Demian Maia - Sick, Sick BJJ. If he can develop some decent striking, he'll give lots of guys fits.
Really though my favorite up and comers are Gegard Mousasi and Satoru Kitaoka; but they hold the DREAM middleweight and Sengoku Lightweight belts respectively. Both of those guys have bright bright future