Release Notes for 439

Added support for Circular thumbnails to the rbxthumb ContentId format. Used like rbxthumb://type=AvatarHeadShot&id=261&w=150&h=150&filters=circular

Optimized solver.

Studio Beta for SurfaceAppearance advanced textures.

Performance improvement on Android Vulkan devices

Luau will now generate a warning for each use of => tokens, and will request you to replace it with the new suggested token.

A memory leak identified by brinkokevin in https://devforum.roblox.com/t/character-memory-leak/588468 is fixed. It occurred when an accessory was created, added to a character, and then destroyed multiple times.

updateBroadphase will process terrain contacts in parallel with spatial hash updates. This can mean a ~40% performance improvement in updateBroadphase for games using terrain.

Fixed GuiObject.TouchSwipe events on android

Debugger is now able to inspect constant upvalues via watch expressions