Well doesn't seem a lot has changed this year. Currently I am touring all the worlds doing the candy baskets whilst alt-tabbed for some easy XP.
Probably not as good XP/hour as questing/grinding/running dungeons but I am doing other stuff out of game so everyones a winner.
So far every single candy bucket is still in place, even Stonetalon Mountains.
But some Padaria ones will cause you (and me) problems if you haven't finished questing in the zone as they will be phased out. So unless I level & quest pretty fast I don't think I will get the Candy Buckets of Pandaria achievement this year :(
Rock on ...