There's was an early leak of gameplay features a few months ago.
A playtester for the game initially leaked the news of their being an "attitude era mode" (which one can assume was actually the wrestlemania mode) and a career mode.
That was later corroborated when a Canadian retail site leaked the description for the game, CONFIRMED by the use of the "Become Immortal" tagline would later and now uses for the game.
The has since taken down the in-depth description they had and replaced it with a bare bones generic one, but the original was this:
FINALLY. 2K Sports' lineup of premier simulation titles expands with the company's first release in the flagship WWE videogame franchise, WWE 2K14. The most electrifying, authentic and comprehensive WWE video game experience to date arrives soon. Become Immortal.
The Revolution continues and only those with attitude need apply in WWE 2K14 for PS3. The biggest, baddest stars of the WWE are back in the game that defines the ultimate single player wrestling experience. Everything you love about the WWE world is here. More moves, more legends, more unlockable content, more cut scenes. Live the drama and become the WWE megastar you were meant to be.
-Select your wrestler from the WWE pantheon of legendary stars
-Cool visual elements includes historic WWE video footage, classic images, multi-camera angles, and detailed cut scenes
-Highly immersive audio environment brings out the raw emotional power of the crowd as they react to your performance
-Unlock exciting new content and wrestlers
-Addictive game play features intuitive controls and creates a sense of escalation throughout the matches
-WWE Career mode lets you create the epic legend of your rise from wrestling rookie to celebrated megastar
-The game will be released this October for PS3 and XBox360
So yeah. I'm REALLY curious to see how in depth the career mode will be, knowing how jam packed the 30 Years of WrestleMania mode is.
If its as in depth as I think, we could be looking at the best WWE game in years, if not ever.
Now, an
earlier leak that claimed there was a Career mode too (title Live The WWE Universe), as well as, a GM mode. They never made mention of the 30 Years of Mania mode, but they did say that the story creator was noticeably absent from the game menus.
The thing that lends some credibility to that is that they also said that the Career Mode had you choosing between a current superstar and a CAW, and that you tracked your career highlights, among other things. Some borrowed from the traditional Universe Mode, such as having a character cash in the MITB briefcase (Ziggler starts off with it). All of this is in line with what that description above said. At least as far as the rise to a legend aspect goes.