Taken from caws.ws and from the vids people are uploading on Youtube
http://caws.ws/forum/topic/463637-john-cenas-vo-entrancevideo/
http://caws.ws/forum/topic/463655-wwe-2k15-early-revealgameplay-ps3360-topic-spoilers/
http://www.youtube.com/user/Hardyfanthe1stBITW/videos
http://www.youtube.com/user/Bgoingtotroll/videos
The summary of it, again, LAST GEN info only:
Gameplay:
_Exactly the same gameplay as WWE 2K14, no new stamina system, no new finishers and signatures system, still the same Wake Up taunt system without the new Wake Up + Finisher combo, still same 2K14 Breaking Point submission system and display, still the same Strike speed of 2K14, no Chain Grappling system, no crawling to the ropes to get up, no crawling Pin, no new victory scenes system. Basically the game is WWE 2K14 with a different roster.
_Replays on the Pause Menu have been removed (on both gens)
Universe:
_Story Challenger: You have to complete objetives (play X rivalries, win X matches) and unlocks new stories
_Rivalry system: Still 3 rivalries per brand. You now can choose what stories do you want to play when setting up a rivalry, there are special stories to be unlocked playing rivalries
_Special Stories: You can activate or deactivate the option to auto Royal Rumble Winner story and Undertaker at WM story
_You can still CPU vs CPU matches
_Still 5 to 7 matches per show
Story Designer:
_Has been removed
Create a Finisher/Special Move:
_Has been removed
Exhibition and match types:
_Same as last year
_Casket Match and 3 Stages of Hell are Showcase matches only
_You can still do CPU vs CPU matches
_You can still select the match pace (Quick, Normal or Epic) and you seem to be able to actually change during the course of the match pressing start or something like that
_You can still choose to have 1, 2, 3 or infinite finishers
Default Champions:
_Brock Lesnar as WWE World Heavyweight Champion
_Dolph Ziggler as Intercontinental Champion
_The Usos as Tag Team Champions
_AJ as Divas Champion
He hasn´t said anything about the USA Championship, although I guess it is Sheamus as default champion. Same goes for the NXT Championship, he hasn´t unlocked them for the moment (although he has played some matches of Who Got NXT) but probably we have Adrian Neville as default NXT Champion going by the images and vids we have seen about him (and by the fact he currently is and has been for months the NXT Champion)
Create an Stable:
_Seems like last year
_No adding managers to Stables
Default Stables:
CAWs:
_Apparently no improvements or new stuff, same as WWE 2K14
_100 CAW slots
Superstar Heads:
_Alberto Del Rio
_Batista
_Brock Lesnar
_Cesaro
_Chris Jericho
_CM Punk (last year)
_CM Punk retro (don´t detail who, maybe he talks about last year DLC long haired CM Punk?)
_Damien Sandow
_Daniel Bryan (Short hair and beard, same as WWE 2K14 in disc Bryan Superstar Head)
_Dolph Ziggler
_Kane (current masked)
_Kane (bald unmasked)
_John Cena
_The Miz
_Paul Heyman
_Randy Orton
_The Rock
_Ryback ("old Ryback" I really hope he doesn´t mean WWE 13 Ryback who was WWE 2K14 DLC Ryback SSH)
_Shawn Michaels
_Sheamus
_Stone Cold
_Triple H current
_Triple H retro
_Undertaker (last year)
_Undertaker (retro)
Vid Showing the mode:
He says Roddy Piper, Goldberg and Mankind are not there this year. Dean Ambrose and Seth Rollins don´t seem to be in Superstar Heads on last gen neither, but I bet they are on next gen.
2K Music Jukebox:
_NO entrance themes in the Jukebox, only the 15 licensed sountracks of the game (which is a great soundtrack anyways)
Divas:
_The same divas who are announced already, no new divas. Cameron and Naomi have their Funkadactyls attire and gimmick and going by the default stables is safe to assume Brie and Nikki both have their Face persona so no new theme for Brie.
_Yes, NXT Womens Title is in the game, although we already know it after the Who´s Got NXT reveal by 2K yesterday.
_Attires, I will copy and paste his words:
New Moves:
[video=youtube;heVkexa4BUA]
NO New Moves:
_NO new Corner Sweet Chin Music
Overalls:
_John Cena: 96
_HBK: 95
_Sheamus: 93
_Undertaker: 93
_Brock Lesnar: 92
_The Rock: 91
_Triple H: 91
_Stone Cold: 90
_Daniel Bryan 2012: 90
_Randy Orton: 90
_Ultimate Warrior: 90
_Roman Reigns: 89
_Seth Rollins: 89
_Alberto Del Rio: 88
_Batista: 88
_Chris Jericho: 88
_Alberto Del Rio 2011: 87
_Big Show: 87
_Cesaro: 86
_Samy Zayn: 86
_Booker T: 85
_Jey Uso: 85
_Jimmy Uso: 85
_Bad News Barret: 84
_Big E: 84
_The Miz: 84
_Rey Mysterio: 84
_R-Truth: 84
_Ryback 84
_Tyson Kidd: 84
_Titus O´Neil: 83
_Xavier Woods: 83
_Darren Young: 81
_Santino Marella: 80
Divas Overall:
_Brie Bella: 83
_Nikki Bella: 83
_AJ: 82
_Natalya: 82
_Tamina Snuka: 81
_Naomi: 76
_Cameron: 75
_Summer Rae: 73
Other stuff:
_Shield members have only their Shield attires and entrances, no alt attires for Dean and Seth.
_Jericho had some of his copyrighted tatoos removed due to a lawsuit about it´s usage on 2K14
_The WWE World Heavyweight Championship is the WWE Championship debuted by The Rock with the old logo (see the Lesnar vs Batista vs Ryback vid in Brian12Extreme channel)
_Create a titantron (which was removed on 2K14) still is not in the game
_The game features a licensed soundtrack, we already know the full list (was posted some weeks ago) but I repeat it because probably there are people who still don´t know it
_You can still adjust the match pace (Quick, Normal or Epic)
_Current Batista´s default attire is Redtista LOL xD
_
CUSTOM MUSIC REMOVED on last gen
_This Fire Burns is in the game, but NO Nexus leader titantron for Punk, he has a previous titantron (and without minitrons) as his MITB 2011 entrance vid and as his returning titantron after the Cena vs Mysterio match, which is not accurate (the first should be his Nexus leader titantron, the second his Cult of Personality titantron)
_NO Corporate Kane, although Bald Kane is a Superstar Head so we can create him
_Triple H has King of Kings as his default theme, his The Game theme is in the game too
_Xavier Woods has Brodus Clay & Funkadactyls theme (it was his first theme when he debuted), not his new theme.
_Roman Reigns has Shield theme with intro, not his single theme without the SHIELD intro. By the way his character model looks better than 2K14
_Curtis Axel character model is AWFUL
_Fandango has Summer Rae in his entrance
Going by what was said by BazMcMahon on his youtube vid I bet the PS4 Dean Ambrose shown in the promotional HiaC vid was a Superstar Head, which would mean next gen gets more Superstar Heads (maybe even the full roster)
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I will be uploading this post if I see new things posted there