Originally Posted by
Snookiwooki
After Naxx there is......nothing. There is no way Blizzard will write a new storyline for an old game. Retail is the continued storyline, as a lot of hardcore no changes classic players like to keep saying to people: "no changes, if you want changes go play retail".
TBC servers would be a logical next step if the business model makes sense.
If they release classic with the original timelines you have a long time before you will have everything on farm and fully geared, this will enable Blizzard to fully analyse the longterm player-base to see if any further retro realms (TBC, WotLK) will be financially viable.