Huh, is the entire map north of the Witch's hut new? Probably I guess. I dunno if the pumpkins there are October-specific, but its October in my game and as a result theres a cave with pumpkins and by clicking one I got a relatively challenging optional battle which gives an accessory, Vexx's Ring, luck/atk bonus.
This may be from an older update if the map already existed, I dunno, but its my first gear upgrade in awhile. May be October specific, can't say for sure!
Fun to be still discovering new stuff anyhow. I have played this game a lot, haha.