Update since the last time I posted here:
Morning Musume:
Nanchatte Renai (Regular)
Tiki Bun / SHABA DABA DO / Mikaeri Bijin (Regular B)
℃-ute:
The Power / Kanashiki Heaven Single Version (Regular B)
S/mileage:
Aa Susukino / Chikyuu wa Kyou mo Ai wo Hagukumu (Regular A)
Juice=Juice:
Black Butterfly / Kazu ga Fukarete (Regular A)
Senobi / Date ja nai yo Uchi no Jinsei wa (Regular A)
Edit: Forgot Nanchatte Renai, which I posted in the collection thread, but not here.