Add UPDATE comments to perishable information

tutorials/scripting/gdscript/gdscript_exports.rst

@@ -389,6 +389,9 @@ The default value **must** be a constant expression.
 
     @export var a = [1, 2, 3]
 
+.. UPDATE: Not supported yet. When nested typed arrays are supported, update
+.. the example.
+
 Exported arrays can specify type (using the same hints as before).
 
 ::

tutorials/scripting/gdscript/static_typing.rst

@@ -59,6 +59,8 @@ methods, properties, constants, etc. from the value:
     **Text Editor > Completion > Add Type Hints** editor setting. Also consider
     enabling `some warnings <Warning system_>`_ that are disabled by default.
 
+.. UPDATE: Planned feature. If JIT/AOT are implemented, update this paragraph.
+
 Also, typed GDScript improves performance by using optimized opcodes when operand/argument
 types are known at compile time. More GDScript optimizations are planned in the future,
 such as JIT/AOT compilation.
@@ -481,6 +483,8 @@ finally declare a statically typed variable with the object::
 Cases where you can't specify types
 -----------------------------------
 
+.. UPDATE: Not supported. If nested types are supported, update this section.
+
 To wrap up this introduction, let's mention cases where you can't use type hints.
 This will trigger a **syntax error**.
 
@@ -497,13 +501,12 @@ This will trigger a **syntax error**.
 
         var teams: Array[Array[Character]] = []
 
-3. Typed dictionaries are not currently supported::
-
-        var map: Dictionary[Vector2i, Item] = {}
-
 Summary
 -------
 
+.. UPDATE: Planned feature. If more optimizations (possibly JIT/AOT?) are
+.. implemented, update this paragraph.
+
 Typed GDScript is a powerful tool. It helps you write more structured code,
 avoid common errors, and create scalable and reliable systems. Static types
 improve GDScript performance and more optimizations are planned for the future.