The teaser is for 'NAMU Cast', and it looks like it's going to be a new show for the girls. However, there is no information out yet about its format or when it will be airing, though some fans have guessed that it will be either a reality format or perhaps an audition show for the next members of the group.

They did, however, put up a countdown on the 6th, so the countdown might have been toward this new show.

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Check out the video above! What do you think it could be?