On 26th April 2016, Linden Lab invited developers to sign up for invitations for early alpha access to Project Sansar.
Update 31st August 2016: Change of Logo and Domain Name
Linden Lab announced in a press release on 31st August 2016 that the platform name altered from “Project Sansar” to just “Sansar” and the URL is simply http://sansar.com/.
Ai Austin Blog 