If you see "Update 1.56" mentioned online, it refers to the patch that added:
: Completing the story unlocks new Assassin's Creed Valhalla -themed rewards for use in Odyssey . Assassin 39-s Creed Odyssey Update 1.56 Download
Note: While accessible early, the quest contains major spoilers. The "Great Escape" quest icon only appears naturally once you finish the three main questlines (Family, Cult of Kosmos, and Mythology). Gameplay Improvements and Quality of Life If you see "Update 1
Update 1.56 re-checks DLC licenses. Restore your licenses: Cult of Kosmos
The update brought significant technical upgrades, particularly for next-gen console owners: