I've been trying to figure out forever what this Playgirl thing Rina Aiuchi's official site was talking about, and finally I realize it's a new album!! haha
According to Rina's
official site:

(I don't think this is the official cover of the album, but it's what the official site has lol)
The track list is as follows:
01.「PLAYGIRL」
02.「START」
03.「Boom-Boom-Boom」
04.「STEP UP!」
05.「CONTROL ME, RESCUE ME」
06.「wonderful danger」
07.「LOVE-FORMATION」
08.「NEVERENDING WINTER」
09.「Dream × Dream」
10.「MISS YOU」
11.「Seductive Medicine」
12.「V.I.P」
13.「GIRLS PLAY」
*bonus track 「Dream × Dream -Love & Wishes Version-」(初回盤のみ)
YesAsia shows that there is are limited versions + regular versions of this album, but since I'm not literate in Japanese I don't know what the difference is
This album features TEN new songs, plus a remix (the DreamxDream one...)
I'm excited yet nervous about this release. I don't really like her image change.. the name of the album is like @.@ and the song titles are a bit.. er.. well.. "seductive medicine"? x.x I don't want her to sell based on a sexy image

I hope her songs will be good...
EDIT:
LOL oops I read one of the titles wrong.. I thought it said "seductive machine" but it's "seductive medicine" ^__________^;;;;