Tizen-sunxi is a community driven port of Tizen for devices with Allwinner processors. So far at the git repository of the projects are available instructions for booting Tizen on couple of open-source hardware boards from the OlinuXino family as well as Tizen images for download.
Right now Philippe "Rzr" Coval is working on Tizen 3 Common port for Sunxi devices which will be merged into the Tizen-sunxi repo. The video below is taken with Tizen 2.0 IVI image which was originally created for PandaBoard but later was ported to devices with Allwinner processors.
Read more at Tizen Experts.