The Happy Super Generation project was started at the end of 2011 and had auditions at the beginning of 2012. The theme of this idol group is "experience" rather than "newness." Or at least that's what I gather from their website.
Uehara Mai (Twitter: @HappygeneMai)
Birthday: February 21 1989
Special Skill: Singing
Ogata Junko (Twitter: @HappygeneJunko)
Birthday: August 14 1988
Special Skill：Making sweets
Sasaki Rika (Twitter: @HappygeneRika)
Birthdate: December 6 1995
Special Skill: Piano
Satou Yuzuki (Twitter: @HappygeneYuzuki)
Birthdate: July 16 1991
Special SKill: English pronunciation
Hattori Haruhi (Twitter: @HappygeneHaruhi)
Birthdate: August 22 1992
Special Skill: Puns and calligraphy
A clip from a song of theirs has been uploaded on the Dtopia youtube channel. Titled "HappyGen no Theme", it resembles the older, earlier Harenchi Punch sound with some... dance elements. Yes.
Their staff twitter can be found here @HappygeneStaff and their website is here http://happy-super-generation.syncl.jp/
I swear to god that Yuzuki looks a lot like Aira, but maybe that's because I miss her that much. Regardless, I wish these girls all the best in their debut.