According to Sports Khan.com, girl group Hello Venus (헬로비너스) will make a surprise comeback in early January with the digital sigle "Wiggle Wiggle" (위글위글). The first teaser video will be released in the next hours, on December 24th (KST). The most interesting thing its that looks like the MV will be rated 19+, the first time a Hello Venus video recive a rate this high.
As you know the "Wiggle Wiggle" dance practice video got a lot of attention this year. According to Fantagio this was part of the promotion for the new digital single.