According to Jeff Goodman at CBS, Indiana just released a statement that Cody Zeller and Christian Watford will be returning next season. I think next season is going to be an incredible one for Big Ten basketball. I think 14-4 or even 13-5 gets you at least a share of the title next year.
Link to press release: http://www.iuhoosiers.com/sports/m-baskbl/spec-rel/041012aab.html
Link to twitter: https://twitter.com/#!/GoodmanCBS