I've been checking the Japan Expo site every day for the last month, but they're quite late this year with the official announcement.
So after AKB48, Passpo, Morning Musume, Idoling and Momoiro Clover Z we are getting C-ute!
Definitely a great first name in the line-up. I don't think they're the guests of honor, but we'll see.
I don't know that many C-ute songs, but the last one blew me away so the timing couldn't be better.

edit: If anybody is interested in sharing a hotel room feel free to shoot me a PM. I've been to the Expo before and I wouldn't mind going again.