A brand new mode has been announced today by 2K Sports for the 2015 rendition of their WWE game.. I'm pretty sure it replaces the "MyCareer" Mode that the new generation systems will have.. Idk if I've read it properly but if someone would like to clear that up feel free.
Completing all five chapters of Who Got NXT will unlock the Proving Ground mode. Proving Ground is described as the spiritual successor to WWE 2K14's Defeat the Streak game mode. While Defeat the Streak pitted players against Undertaker, Proving Ground will put you up against WWE 2K15 cover star John Cena.
http://www.ign.com/articles/2014/10/24/wwe-2k15-who-got-nxt-mode-announced-and-detailed
^ That is the statement that leads me to believe that what I said was true.Replacing MyCareer on PlayStation 3 and Xbox 360 is a mode called Who Got NXT? which is a story mode focusing on up-and-comers from NXT such as Adrian Neville, Bo Dallas, Corey Graves, Rusev and Sami Zayn.
Completing all five chapters of Who Got NXT will unlock the Proving Ground mode. Proving Ground is described as the spiritual successor to WWE 2K14's Defeat the Streak game mode. While Defeat the Streak pitted players against Undertaker, Proving Ground will put you up against WWE 2K15 cover star John Cena.
http://www.ign.com/articles/2014/10/24/wwe-2k15-who-got-nxt-mode-announced-and-detailed