I follow Tokyograph on twitter and they have a couple of recent tweets about an announcement that has me going WTF.
Johnny says A.B.C-Z has a high chance of going major next year, possibly as 7-member group with name ABC-xyZ
...The "xy" in ABC-xyZ refers to the possible addition of "sexy tantou" member(s)
Honestly I don't know how to take this. I'd be happy for A.B.C.-Z to debut and hopefully they'll add some of the older Juniors to the group so there isn't such a gap in ages between A.B.C. and Hasshi. At the same time not everything Johnny has said in an article has come true. Also it seems odd for them to announce something that isn't set in stone. Argh, I swear Johnny is the ultimate idol troll.
Done some scrounging for information about this announcement and discovered some new information, though it hasn't been officially verified (I found it on a blog of a Japanese A.B.C.-Z fan) but one of the new group members will be B.I. Shadow's Kikuchi Fuma and the other hasn't been decided yet.