Forza Horizon 3 will be withdrawn from sale in September 2020.
In a brief statement, Forza Community Team member "Morglet 713" confirmed the game will reach its "end of life" status on September 27, after which players will not be able to buy the base game nor its related downloadable content.
Players who already have the title, however, will still be able to download and play "as normal."
"A heads up for the Forza community: Forza Horizon 3 will reach 'end of life' status on September 27," said the statement posted on the Forza forum. "That means that the game and its associated DLC will no longer be available for purchase.