Stop referring to GDExtension as experimental

Author: dsnopek

tutorials/migrating/upgrading_to_godot_4.1.rst

@@ -242,9 +242,6 @@ Multiple layered ``SubViewportContainer`` nodes, that should all receive mouse i
 Updating your GDExtension for 4.1
 ---------------------------------
 
-GDExtension is still in beta. Until it's marked as stable, compatibility may break when
-upgrading to a new minor version of Godot.
-
 In order to fix a serious bug, in Godot 4.1 we had to break binary compatibility in a big
 way and source compatibility in a small way.
 

tutorials/scripting/gdextension/gdextension_cpp_example.rst

@@ -44,14 +44,12 @@ of Godot. GDExtensions will not work in older versions of Godot (only Godot 4 an
     to work with Godot's ``master`` branch.
 
 .. warning::
-    Our long-term goal is that GDExtensions targeting an earlier version of Godot will work
-    in later minor versions, but not vice-versa. For example, a GDExtension targeting Godot 4.1
-    should work just fine in Godot 4.2, but one targeting Godot 4.2 won't work in Godot 4.1.
-
-    However, GDExtension is currently *experimental*, which means that we may break compatibility
-    in order to fix major bugs or include critical features. For example, GDExtensions created
-    for Godot 4.0 aren't compatible with Godot 4.1
-    (see :ref:`updating_your_gdextension_for_godot_4_1`).
+    GDExtensions targeting an earlier version of Godot should work in later
+    minor versions, but not vice-versa. For example, a GDExtension targeting Godot 4.2
+    should work just fine in Godot 4.3, but one targeting Godot 4.3 won't work in Godot 4.2.
+
+    There is one exception to this: extensions targeting Godot 4.0 will _not_ work with
+    Godot 4.1 and later (see :ref:`updating_your_gdextension_for_godot_4_1`).
 
 If you are versioning your project using Git, it is recommended to add it as
 a Git submodule:

tutorials/scripting/gdextension/what_is_gdextension.rst

@@ -22,11 +22,6 @@ run C or C++ code in a Godot project.
 They also both allow you to integrate third-party libraries into Godot. The one
 you should choose depends on your needs.
 
-.. warning::
-
-    GDExtension is currently *experimental*, which means that we may
-    break compatibility in order to fix major bugs or include critical features.
-
 Advantages of GDExtension
 ~~~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -106,18 +101,16 @@ The bindings below are developed and maintained by the community:
 Version compatibility
 ---------------------
 
-Usually, GDExtensions targeting an earlier version of Godot will work in later
+GDExtensions targeting an earlier version of Godot should work in later
 minor versions, but not vice-versa. For example, a GDExtension targeting Godot 4.2
 should work just fine in Godot 4.3, but one targeting Godot 4.3 won't work in Godot 4.2.
 
 For this reason, when creating GDExtensions, you may want to target the lowest version of
 Godot that has the features you need, *not* the most recent version of Godot. This can
 save you from needing to create multiple builds for different versions of Godot.
 
-However, GDExtension is currently *experimental*, which means that we may
-break compatibility in order to fix major bugs or include critical features.
-For example, GDExtensions created for Godot 4.0 aren't compatible with Godot
-4.1 (see :ref:`updating_your_gdextension_for_godot_4_1`).
+There is one exception to this: extensions targeting Godot 4.0 will _not_ work with
+Godot 4.1 and later (see :ref:`updating_your_gdextension_for_godot_4_1`).
 
 GDExtensions are also only compatible with engine builds that use the same
 level of floating-point precision the extension was compiled for. This means