Microsoft SQL Server code name ‘Denali’ enables a cloud-ready information platform that will help organizations unlock breakthrough insights across the organization as well as quickly build solutions and extend data across on-premises and public cloud backed by capabilities for mission critical confidence.
Additionally you can read what are new features of the Denali CTP3 on TechNet Wiki.
The SQL Server code name ‘Denali’ Community Technical Preview 3 (CTP3) Product Guide download contains the latest datasheets, white papers, click-through and auto-running demonstrations, hands-on lab previews, technical presentations, and other useful links to help you evaluate the SQL Server code name ‘Denali’ CTP3 release. The Product Guide organizes the content for easier viewing.
Reference: Pinal Dave (http://blog.SQLAuthority.com)