According to the release notes, there are no new game bug fixes, but it does fix some general issues. In addition to the new game optimizations, the new Geforce 566.03 WHQL Game Ready driver also adds DLSS 3 support for Horizon Zero Dawn Remastered, No More Room In Hell 2, Red Dead Redemption, and The Axis Unseen games. The new driver also brings an extensive list of G-Sync displays that are now supported, including Samsung's new Odyssey monitors.
You can download the new Geforce 566.03 WHQL Game Ready driver update over at Nvidia's support page and find the full release notes.