As you are aware already, the Forza Horizon 3 demo is nowhere to be found and was supposed to go live a few hours ago but never did go up. Many took to Twitter and support to ask when it would be released. A now deleted tweet has revealed the new release times which can still be seen below.
— Chad Kanera (@chadkanera) September 12, 2016
Could this be the new time for the Forza Horizon 3 demo? We can only wait and see if it goes live then or not.
UPDATE: The Forza Horizon 3 demo is out and can be downloaded directly at http://www.microsoft.com/en-us/store/p/forza-horizon-3-demo/bw7nnj22szrr with a download size of 18.34GB