http://www.shacknews.com/article/81897/microsoft-promises-more-core-games-coming-to-pc-than-past
Reading rest of the article sounds like Windows 8 or new PC service"I think it's fair to say that we've lost our way a bit in supporting Windows games," Microsoft Studios VP Phil Spencer admitted. "But we're back."
I needed to press further. I wanted him to explicitly tell me that there are PC games coming from Microsoft first-party. And he complied. "You'll see us doing more stuff on Windows. We probably have more individual projects on Windows than we've had in ten years at Microsoft Studios."
Having that kind of interoperability is crucial to improving the value of Xbox Live, Spencer points out. "Let's start to act like a true first-party across all these devices. A service like Xbox Live that knows me and my content and my friends and achievements across all these devices. I think that's an advantage for us."