"Dirt 5 Year One Edition" is an enhanced version of the game that includes all the content from the original game plus additional features and updates released over the first year. This edition typically offers:
The multiplayer update for Dirt 5 Year One Edition is available now for all players. To get the update, simply launch the game and follow the prompts to download and install the new content.
It's always a good idea to check the official Dirt 5 website, the game's community page on platforms like Steam, or the developer's (Codemasters) social media channels for the most current information on updates, DLCs, and community events.