Forza Horizon 4 has appeared in the database of the Brazilian Classification Rating Board that deals with evaluating video games for sale in the country. According to what is reported on the product sheet, the game will be released during 2018.
The classification does not reveal further details, the publisher indicated is Microsoft Game Studios while the target platforms are Xbox One, Xbox One X and Windows PC, the name of the developers instead does not appear, as often happens for this kind of evaluations.
Thus, 2018 seems therefore to be the year of Forza Horizon 4, according to some previous leaks the game will be set in Japan and will be released in September, at the beginning of the fall season.
In short, as expected, in 2018 there will probably be a new Forza Horizon, presumably developed by Playground Games, a fast-growing studio under the supervision of Turn 10 Studios.
The reveal would be expected for the first half of the year, in any case, we are waiting for any official confirmations or denials from the publishers.
In recent news, Aaron Greenberg of Microsoft has confirmed that Forza Horizon 3 will be getting a new patch on January 15 that will make the game to run in native 4K resolution and enhanced on Xbox One X.