As promised, SharePoint Framework (SPFx) preview was released on August 17th, 2016.
The SharePoint Framework is still in initial Developer Preview, and it’s still rough around the edges. As we work to improve the SharePoint Framework, we’d love your feedback! If you have feedback, please use UserVoice. If you have technical questions about the framework, we’ll be monitoring #spfx, #spfx-webparts, and #spfx-tooling onSharePoint StackExchange.
Happy SPFx coding all!