There's no rush to release this if the album doesn't come our until late May (obviously they are trying to get her to perform on AI the album release week). However, at least from the sound of the snippet they are going to try to get her albums selling again. On the Floor will not serve that purpose, that song is simply doing its job of making her relevant again in the mainstream.
YESSSS I'm loving that snippet. J.Lo better ****! Only she who doesn't have great vocals can still make a song without all the heavy autotune and it still be BANGIN'. We're ready.