Today Microsoft has announced SharePoint and Office 2013 Technical preview.

There are already a lot of documents and visio diagram to help understand what is coming up in the next wersion of SharPoint.  Here is a list of the links that were available at the moment of this post.  There will be a lot more documentation coming up this week.  I will also make sure to write a few articles about my experience with the product.  Meanwhile you can read these documents: