This post is as per beta version, there could be some changes with RTM version.
For IT Pro - Capabilities and features in SharePoint 2013
SharePoint 2013 training for IT pros
How-to training and walkthrough videos with this interactive course about SharePoint 2013 including changes and new features for search, social, deployment and performance/scalability.
What’s new for developers in SharePoint 2013
SharePoint 2013 Top 10 New Features
Overview of the Top Features of SharePoint 2013
The New SharePoint
Highlights of the new version of SharePoint
New SharePoint Technical Content
The TechNet home page and feature package covers IT professional content for new Office, Office 365, SharePoint, Exchange, Lync, and Project
SharePoint 2013 Technical Library in Compiled Help (Chm)
CHM version of SharePoint 2013 content in the SharePoint 2013 technical library.