^ an interesting idol you are getting yourself into there *ahem*
But yah, out of the ones you listed, I'm a fan of Zekkyou, and think Akishibu and Elfoat are okay.
Anyway, seems like all of the interesting
(for me) idol releases are happening around Xmas time:
Guso Drop - new single "Bousou Shoujo" - 12/23
Interesting thing here is that the single contains the DVD of their one-man-live... all 1hr44mins of it, for the nice price of 1500 yen
As for the song itself, not a big fan - it's not written by Daichi (their producer) but by someone else...
https://twitter.com/gu_dro/status/671122638127796224Zekkyou Suru 60-do - "Only Place We Can Cry" single - 12/23
CD and CD+DVD editions
http://sixpercentismine.net/z60/I think the covers for this look pretty ace:
(sorry for the small size, couldn't be arsed hunting around for the bigger ones)Honey Spice - one-man-live DVD - 12/25
Well, they announced this at the time, but nothing since, but looking forward to it. It's also one of their last shows before Yuna left.