https://www.pcgamer.com/forza-horizon-4-is-going-to-the-uk-watch-the-trailer/

Forza Horizon 4 has been announced, this time set in the UK. 

Seasons and weather conditions are coming. Seasons and weather can change on a whim, but they're synchronized for all the players driving around the same open world. It's not clear what causes conditions to change in the open world, but it'll make events more varied and replayable than before.