Nintendo is involved with Bayonetta 2 development
Hideki Kamiya is a big Twitter user. Sometimes he tweets about random stuff. Other times he shares some useful information. In any case, I advise you to follow him since he often posts some hilarious comments (perhaps unintentionally?).
One recent fan answer from Kamiya concerns the development of Bayonetta 2. He was able to confirm that Nintendo is involved, in a terse and to the point message.
Yup. RT @mjpingram Are there any Nintendo producers working on Bayonetta 2. I know it’s a common practice for games they publish.
— ???? Hideki Kamiya (@PG_kamiya) September 22, 2012
This shouldn’t be a huge surprise, as Nintendo does tend to lend assistance when working with other studios on collaborations. Still, it’s nice to have a confirmation!