This specific archive typically contains the "scene" release update by the group (or related repackers). It is used to bring a base installation of the Anniversary Edition up to the 1.6.323 build, which was a significant early patch for the AE release.
: Patches for bugs introduced in the initial Anniversary Edition rollout.
The file is a compressed update package for The Elder Scrolls V: Skyrim Anniversary Edition , specifically designed to update the game to version 1.6.323.0.8 . Contents and Purpose
: Updated SkyrimSE.exe and SkyrimSELauncher.exe files.