SharePoint 15!!! Development is going on in express mode :). Microsoft SharePoint team is getting ready with the next release of SharePoint and it named SharePoint 15. Recently they released the interoperability API Documentation of SharePoint 15 Technical Preview version and it contains what's new. I am still not yet gone through all, will update you once I completed reviewing the documentation. It is public available and download it here. SharePoint 15 Technical Preview Documentation.