Something everyone busy with SharePoint would like to know: what will be the new features of SharePoint? What has been changed in the existing functionality? A lot of information that will point us in the right direction is available now from the source…
See the Office 15 Technical Preview - Open Specification Update @ http://blogs.msdn.com/b/officeinteroperability/archive/2012/01/30/office-15-technical-preview-open-specification-update.aspx.
The material is sometimes hard to read, but there is a lot of information hidden in the documents.