Did they promote most of Steam Girls to Alice 10? Mayu posted this attached pic on twitter a few hours ago
EDIT: It seems so - Mana also mentioned joining Alice 10, and there's new members in both Steam Girls and Armor Girls.
It's like old-school Alice 10 again (I wonder why they never had another pink after Asami left
ANOTHER EDIT: upon watching a video on twitter of the new Alice 10, it seems that Kanon is now pink
)