Yeah...this still confirms nothing. I won't believe anything unless it comes from twitter or some other trusted resource. Not to sound rude or anything but I won't be subscribing to some kid or liking and commenting especially if they ask for those things and they don't have real proof of anything in their video.
The PC, Xbox 360, and PS3 versions have way more than 23 biomes when you count all the technical biomes like rivers, beaches, etc, etc.
4J/Mojang has confirmed that the PS4 and Xbox One Editions will be equal to the current TU16 for the Xbox 360 Edition. So there are no new biomes. Just the same old biomes the game currently has on the Xbox 360 Edition and PS3 Edition.
Those would be...
Cold Taiga M
Mushroom Island Shore
I'm fairly certain that is all of them. One or two might be wrong and could be replaced by another one but those are most of the major and smaller technical biomes that exist in the console versions of Minecraft. You may not consider all of them as biomes, but it's the games code that matters, not what you think is or isn't a biome.You will not be seeing any new biomes on the next-gen Minecraft games when they release. They will be equal in content to what the PS3 and Xbox 360 currently have.