Add automatic checking for engine updates

SConstruct

@@ -228,6 +228,7 @@ opts.Add(
 opts.Add(BoolVariable("use_precise_math_checks", "Math checks use very precise epsilon (debug option)", False))
 opts.Add(BoolVariable("scu_build", "Use single compilation unit build", False))
 opts.Add("scu_limit", "Max includes per SCU file when using scu_build (determines RAM use)", "0")
+opts.Add(BoolVariable("engine_update_check", "Enable engine update checks in the Project Manager", True))
 
 # Thirdparty libraries
 opts.Add(BoolVariable("builtin_brotli", "Use the built-in Brotli library", True))
@@ -474,6 +475,9 @@ if methods.get_cmdline_bool("fast_unsafe", env_base.dev_build):
 if env_base["use_precise_math_checks"]:
     env_base.Append(CPPDEFINES=["PRECISE_MATH_CHECKS"])
 
+if env_base["engine_update_check"]:
+    env_base.Append(CPPDEFINES=["ENGINE_UPDATE_CHECK_ENABLED"])
+
 if not env_base.File("#main/splash_editor.png").exists():
     # Force disabling editor splash if missing.
     env_base["no_editor_splash"] = True

doc/classes/EditorSettings.xml

@@ -866,8 +866,16 @@
 			Specify the multiplier to apply to the scale for the editor gizmo handles to improve usability on touchscreen devices.
 			[b]Note:[/b] Defaults to [code]1[/code] on non-touchscreen devices.
 		</member>
+		<member name="network/connection/engine_version_update_mode" type="int" setter="" getter="">
+			Specifies how the engine should check for updates.
+			- [b]Disable Update Checks[/b] will block the engine from checking updates (see also [member network/connection/network_mode]).
+			- [b]Check Newest Preview[/b] (default for preview versions) will check for the newest available development snapshot.
+			- [b]Check Newest Stable[/b] (default for stable versions) will check for the newest available stable version.
+			- [b]Check Newest Patch[/b] will check for the latest available stable version, but only within the same minor version. E.g. if your version is [code]4.3.stable[/code], you will be notified about [code]4.3.1.stable[/code], but not [code]4.4.stable[/code].
+			All update modes will ignore builds with different major versions (e.g. Godot 4 -&gt; Godot 5).
+		</member>
 		<member name="network/connection/network_mode" type="int" setter="" getter="">
-			Determines whether online features are enabled in the editor, such as the Asset Library. Setting this property to "Offline" is recommended to limit editor's internet activity, especially if privacy is a concern.
+			Determines whether online features are enabled in the editor, such as the Asset Library or update checks. Disabling these online features helps alleviate privacy concerns by preventing the editor from making HTTP requests to the Godot website, GitHub, or third-party platforms hosting assets from the Asset Library.
 		</member>
 		<member name="network/debug/remote_host" type="String" setter="" getter="">
 			The address to listen to when starting the remote debugger. This can be set to [code]0.0.0.0[/code] to allow external clients to connect to the remote debugger (instead of restricting the remote debugger to connections from [code]localhost[/code]).

editor/editor_settings.cpp

@@ -49,6 +49,7 @@
 #include "editor/editor_paths.h"
 #include "editor/editor_property_name_processor.h"
 #include "editor/editor_translation.h"
+#include "editor/engine_update_label.h"
 #include "scene/gui/color_picker.h"
 #include "scene/main/node.h"
 #include "scene/main/scene_tree.h"
@@ -413,6 +414,14 @@ void EditorSettings::_load_defaults(Ref<ConfigFile> p_extra_config) {
 	EDITOR_SETTING(Variant::INT, PROPERTY_HINT_ENUM, "interface/editor/editor_screen", -2, ed_screen_hints)
 	EDITOR_SETTING(Variant::INT, PROPERTY_HINT_ENUM, "interface/editor/project_manager_screen", -2, ed_screen_hints)
 
+	{
+		EngineUpdateLabel::UpdateMode default_update_mode = EngineUpdateLabel::UpdateMode::NEWEST_UNSTABLE;
+		if (String(VERSION_STATUS) == String("stable")) {
+			default_update_mode = EngineUpdateLabel::UpdateMode::NEWEST_STABLE;
+		}
+		EDITOR_SETTING(Variant::INT, PROPERTY_HINT_ENUM, "network/connection/engine_version_update_mode", int(default_update_mode), "Disable Update Checks,Check Newest Preview,Check Newest Stable,Check Newest Patch"); // Uses EngineUpdateLabel::UpdateMode.
+	}
+
 	_initial_set("interface/editor/debug/enable_pseudolocalization", false);
 	set_restart_if_changed("interface/editor/debug/enable_pseudolocalization", true);
 	// Use pseudolocalization in editor.