Following the release of Tizen 2.1 Beta, Today we have Tizen 2.1 source code and SDK immediately available for download at https://developer.tizen.org/downloads/sdk
Tizen 2.1 Nectarine is still considered a minor release (like the Beta) but it contains several new features and performance enhancements.
UPDATE:
Please use these links whilst the Tizen site is updated:
SDK Images:
http://download.tizen.org/sdk/sdk-images/2.1/
Install Manager:
http://download.tizen.org/sdk/InstallManager/tizen-sdk-2.1/
Highlights of this release include:
For more information please visit https://source.tizen.org/