There are no detailed official patch notes provided by Ubisoft for this specific build.

The update modified internal depot files, specifically updating DataPC_patch_01.forge and adjusting support files like installscript.vdf .

Community consensus and platform data suggest this was a "technical update" designed to ensure continued compatibility with modern launchers (like the transition from Uplay to Ubisoft Connect) and minor stability fixes. Core Game Features

While this build did not add new features, it maintains the standard high-end capabilities of the game: Title Update 5 Patch Notes - Ghost Recon Wildlands

for Tom Clancy’s Ghost Recon Wildlands , released on December 14, 2020 , was a minor backend update primarily focused on maintenance rather than new gameplay content. Update Overview