blog post https://www.tizen.org/blogs/tsg/2014/tizen-2.3-beta-sdk-release

release notes https://developer.tizen.org/tizen-2.3-beta-sdk-release-notes

Native framework

Tizen native framework has been fully revised to improve the performance and the scalability of Native applications. The new native framework has following benefits:

• Multi-profile: Mobile in 2.3, other profiles in the near future
  • Minimal porting effort to run native application on multiple Tizen Profiles
• Lightweight and fast enough to fit in every device segment.
• Improved graphics: Enlightenment Foundation Libraries (EFL)
  • Scalable, fast, themeable, easily customizable graphics for native apps (3rd party)
• More open source library support for Tizen Native Applications
  • 10+ opensource libraries supported
• Mature technology was already in Tizen, now in SDK and Compliance