This is an Interesting Video where it goes through questions like:
What is Tizen? Which I suppose many are going through. Where can I find Community ? Downloads? Documentation? This video also Sencha Touch as below:
"We are delighted to announce Sencha Touch that will officially support Tizen? Support is a direct result of the development of a close relationship with two key members of Tizen Association, Intel and Samsung, and we are very happy with their shared vision for the platform and their commitment to HTML5 , "said Michael Mullany, CEO of Sencha on a post on the official blog Sencha . "It promises to be a good partnership that will benefit Sencha HTML5 and developers everywhere."