Those are data-mined, so they may or may not show up in the future. But we're not going to get an official word on anything like that until they make an actual announcement.

@nerevarine1138 I'm apologize for being "du-uh" but what does date-mined mean?

Data mining is the process of digging through Eso data files and looking for information like maps, graphics, models, or sounds. It's not hacking or exploiting the game, just looking at the game files -- often, but not always, files that are publicly available -- to see what's there. These files can be from the current game client or come from a PTS or beta build, any of which could have new content that players can't access in the game world. Similar to looking up filming photos from a favorite TV show or movie, data mining gives you a sneak peek at game content that hasn't been publicly released, which can range from hints at the next patch to hints to the next expansion.

I said this before that those mounts possibly might never be on the store. Just because a photo is data mined does mean it will ever actually be in the game or for sale on the store.

It's entirely possible that those are early prototypes/placeholders

Gina did mention these images were data mined and subject to change.Jussayin.

All in due time, nothing seems to be fast in ESO. But at least they are slowly adding feature the playerbase wants.