According to a report from Sports DongA, girl group Rainbow may be joining the bevy of singers preparing to make a comeback in January!

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The girls will be showing a fascinating new image of themselves as mature women for their mini-album, which supposedly will be released on January 20.  In addition, the report states that DSP Media is preparing the girls' for feminine, mature, and sexy performances.

Stay tuned for updates and confirmation!  Are you looking forward to Rainbow's possible comeback?