+- [You can now use `#[repr(transparent)]` on univariant `enum`s.][68122] Meaning
+ that you can create an enum that has the exact layout and ABI of the type
+ it contains.
+- [There are some *syntax-only* changes:][67131]
+ - `default` is syntactically allowed before items in `trait` definitions.
+ - Items in `impl`s (i.e. `const`s, `type`s, and `fn`s) may syntactically
+ leave out their bodies in favor of `;`.
+ - Bounds on associated types in `impl`s are now syntactically allowed
+ (e.g. `type Foo: Ord;`).
+ - `...` (the C-variadic type) may occur syntactically directly as the type of
+ any function parameter.
+
+ These are still rejected *semantically*, so you will likely receive an error
+ but these changes can be seen and parsed by procedural macros and
+ conditional compilation.