I'm not leveling any new alts until this hits either; for now I'm just working on my remaining 100s to 110 (as well as my 97 Monk) and seeing class campaigns & getting class mounts.
I'm a bit bummed though; sounds like this is still a bit away; for some reason I was thinking 7.3.5 was when the new raid opened in a couple of weeks. Ah well, still plenty of work to do.