Read the official Contao announcements.
TYPOlight 2.0beta-rc1 is available
by Leo Feyer
TYPOlight Open Source CMS 2.0beta-rc1 is available for download. Thank you guys for doing such a great job testing the system! Please make sure to remove all TinyMCE files (plugins/tinyMCE) before you update! Take a look at the changelog to see what has been done.
Download this release from github.com.