I've always wanted a cat mount (I'm undead) because I think that their model is really cool looking. I grinded to Exalted with Orgrimmar so I could get a Wolf (I hate the color of the AV one. That and everyone and their brother has one) because they're the closest thing and are pretty cool in and of themselves. With the addition of TBC and Horde getting Blood Elves I finally had a glimmer of hope (Other than hoping to win a rare drop in ZG) of getting a kitty! Lo and behold...
I haven't seen models yet (wowwiki discourages Alpha images or something), but I'm imagining Cockatrices will look something like a raptorish Mechanostrider and Elekks will look something like a squashed Kodo with horns. I was pretty sad that we wouldn't have a chance at cat mounts :( At least I don't feel compelled to grind BE quests and give them oodles of potential bandages like I did with my Wolf (<3).
A buddy of mine was talking about the Winterspring mount which only Alliance have access to, but I wasn't terribly impressed. It looks like that big purplish cat that every other Hunter seems to have. I saw an article about a potential raptor you can get in Un'Goro but I didn't see anything about faction, though I'm sure it will need Darkspear rep in addition to w/e(For the Winterspring mount you need Tiger riding skill).
That said, what is your favorite mount and will you try to go for these new additons (Provided you don't roll Draeni/BE)?
... That is if you waste your time/gold on these kinds of things :P What can I say, it keeps the game "fun".
Elekks are big Elephants, and I mean big; Kodos got nothing on an Elekk. Cockatrices look like the Phoenix from WC3, as far as I'm aware.
As for me, I've been a big raptor fan since I won my [Swift Razzashi Raptor]. Cats don't interest me much, although the Cat mount from ZG looks pretty swell. If you really want a cat as mount as Horde, run a lot of ZG, but for the record: I have only seen it drop once since ZG came out :)
It looks like it's got kodo length/width, and double the height with giant horns.
There's one on youtube that I clicked on, and got a big red box with the text "This video has been removed at the request of copyright owner Blizzard Entertainment because its content was used without permission"... hahaha.
The only pictures of a cockatrice I could find have the same model as the tallstriders in Darkshore / Auberdine. From what I've read this is just a placeholder though, but you can get an idea of their movement / style from it.
Kodos are great... I really wish Tauren would get some more mount variation love from Blizz, I've been waiting almost a year and a half for that stupid Raptor from ZG just because Tauren can ride them... I'm certainly going to get a ton of Runecloth for Blood Elf rep tho :D
Found this... it's got A LOT of mobs in here... I'm thinking someone made a private server out of the alpha, spawned a ton of stuff and walked around.
If you want to see the mounts without spoilers to the rest of the mobs... 3:17 has an armored Elekk, 4:23 has an armored griffen, 4:35 has a wyvern that looks like it may be armored, it's hard to tell... there's a definate saddle on it but I haven't played horde enough to tell how much different it is than the current ones... 4:52 is the phoenix thing, and 6:01 is a white griffen.