Godot 3.5 is a major new milestone with improvements all around, backported from the development branch of Godot 4.0, or written for the 3.x branch's specific needs. It is absolutely feature-packed with new features such as:
New NavigationServer with obstacle avoidance; improved tweening with SceneTreeTween; Time singleton; Label3D and TextMesh nodes; unique node names for easy access; flow containers; 3D physics interpolation; asynchronous shader compilation and caching; OccluderShapePolygon; material overlays; Android editor port; improved VCS features; and more!
All files for this release are mirrored under Assets below.