VersionSectionRiskImpactNote
2021.3.12f1Fixes
UI Toolkit
FixFixed for 2021.3.X: [UI Builder] @import is stripped from the associated .uss file when saving .uxml.

Pick your Unity version

Unity Releases compares releases against the version your project is on. Picking it now keeps Compare versions focused on what changes between where you are and where you might be going.