The Shaggy Dev | 5 more changes to GDScript 2 in Godot 4 you'll want to know about @TheShaggyDev | Uploaded March 2023 | Updated October 2024, 29 minutes ago.
From signal and tween updates, to debugging help, here's another grab bag overview of some changes to GDScript in Godot 4 that you may want to know about.

Text version and code snippets: shaggydev.com/2023/03/07/gdscript1-to-gdscript2-part2

Part 1: youtube.com/watch?v=8BgAeN4RRR4

Signals: docs.godotengine.org/en/latest/classes/class_signal.html

Y-sorting: docs.godotengine.org/en/latest/classes/class_canvasitem.html#class-canvasitem-property-y-sort-enabled

Documentation comments: docs.godotengine.org/en/latest/tutorials/scripting/gdscript/gdscript_documentation_comments.html

Tween: docs.godotengine.org/en/latest/classes/class_tween.html

SceneTreeTween: docs.godotengine.org/en/3.5/classes/class_scenetreetween.html

Performance monitors: docs.godotengine.org/en/stable/tutorials/scripting/debug/custom_performance_monitors.html

Migrating from Godot 3: docs.godotengine.org/en/stable/tutorials/migrating/upgrading_to_godot_4.html