And it's called Trials Rising "Sixty-Six" because it takes player onto the famous US highway, Route 66. You'll ride across the Grand Canyon, through Chicago and more, while also gaining new items and collectibles, which is all part of the game's Season One content updates.

Here's the official line from Ubisoft:

After completing League 3 in the base game, players will have the opportunity to experience all that Sixty-Six has to offer, including twenty-four new tracks with two Stadium Finals and two Skill Games. Protect your rider from hard-hitting obstacles with the American Football Outfit, which features a football helmet, jersey, football pants and cleats. Also included are new Contracts and new hidden golden squirrel collectibles, designed especially for the occasion. Collect them all to receive more fame.

Sixty-Six is available as standalone purchase for $11.95 or as part of the Expansion Pass for $29.95. The Expansion Pass includes Trials Rising Sixty-Six – Expansion I, Trials Rising Crash & Sunburn – Expansion II, the Stuntman Rider Pack and the Samurai Item Pack.

In addition to Sixty-Six, Private Multiplayer mode is now available at no additional cost to Trials Rising players on PlayStation, Xbox and Windows PC platforms, where players can put their friends to the test on the same track.

Watch a trailer for the new expansion embedded below.