Reminder:
http://lostpedia.com/wiki/The_Orchid
This is interesting, and they released it in the summer (the video.
Basically, there's one bunny, and then the same bunny appears while it's also somewhere else at the same time. There's a sort of duality effect, or maybe it's the same bunny? Time travel? wormholes?
Either way, this is Lindelof and Cuse's way of telling us "getting ready for some crazy sci-fi arse sh%t in season 4"