Update 1.12 release notes.

README.md

@@ -184,15 +184,29 @@ Also as of this release, both the compiler and VM can run on non-x86 platforms
 
 ### SourcePawn 1.12
 
-SourcePawn 1.12 is currently in development.
+SourcePawn 1.12 was released on November 30, 2024.
 
-This release contains a number of bug fixes and internal improvements. It also greatly improves
-error message readability in the style of modern compilers.
+This release contains a number of bug fixes and internal improvements. It also
+greatly improves error message readability in the style of modern compilers.
+The lexer was completely rewritten to make this possible.
+
+Array type checking and initialization has been completely rewritten. The
+generated code is simpler and more compile-time errors can be caught. Error
+messages around arrays have been greatly improved.
 
 This release contains a number of language changes.
+ - Natives can now return enum structs and fixed-size arrays.
+ - Enum structs can be passed to natives.
  - Function bodies must now be braced. There is no compatibility mode for this change.
  - `INVALID_FUNCTION` is now type `null_t`. The old internal type `nullfunc_t` has been removed.
    `INVALID_FUNCTION` and `null` are now equivalent, which means code manually checking for `-1`
     will not work. There are three functions added to `IPluginContext` to help native code with
     this change: `GetNullFunctionValue()`, `IsNullFunctionId()`, and `GetFunctionByIdOrNull()`.
  - Warnings around indentation have been removed.
+ - Tags have been removed. Old syntax tags must now correspond to declared or builtin types.
+ - "Fixed" enums have been removed. Enum type checking is the same whether or not the name is capitalized.
+ - Function aliases have been removed.
+ - The "using" keyword has been removed and is no longer implemented.
+ - The `__nullable__` and destructor syntax for handles have been re-introduced.
+ - Built-in defines and constants are now defined by an in-memory implicit include.
+ - `#endinput` is no longer necessary. `#include` will no longer double-include.