i don't know if they're a limited time thing, they probably are.
got them from wal-mart a few days ago. very meh. would not get again.
oreos have been going down-hill for a while. the target & wal-mart versions are better, but they just have original, double filling & sometimes vanilla cookie. wal-mart does have creme brulee, which is pretty good.
google tells me they also have key lime pie chocolate banana, but the local one doesn't have those.