I can't imagine there
not being videos for the units, but we've had no confirmation that there will be, so who knows... if Pledis is to be believed, the groups weren't even chosen until about a week ago, so I guess it wouldn't really be that surprising if they didn't have time to shoot two new videos.
edit: they DID film videos according to
energywenkahi on Twitter, and (s)he's usually pretty reliable when it comes to After School news.