The plan is to have 15 exclusive titles in the first year of release for the Xbox One. Eight of these titles will be new IP that will be exclusive to the Xbox One platform. Microsoft will fill in the blanks on the specifics during their gaming-oriented press conference at E3. It is expected that Microsoft will take the wraps off some more of those eight new IP that are in development for the platform.
So far, we learned that Remedy has a new IP coming that will be called Quantum Break, but beyond that only Forza 5 and Ryse were confirmed for the new system. This leaves the potential for Microsoft to show a lot of software at E3.