Once in a while Blizzard likes to send out surveys to a random selection of its player base. Often these are related to matters concerning the future of their games, and these can often lead to some interesting speculations and theories.
This time a survey related to the release of the Burning Crusade and to the future of WoW classic in relation to the release was sent out to a selection of players.
Questions such as How do you feel about Classic servers that may include new content from the experience of the original WoW were asked. So it seems that Blizzard still is unsure about what direction Classic WoW will take once TBC is released and that there still is a chance for a Classic+ solution with different content than in the original.
I guess we will just have to wait and see.