Update RELEASES.md for 1.53.0

RELEASES.md

@@ -37,9 +37,12 @@ Libraries
   Android platforms when available.][81469]
 - [`slice::IterMut<'_, T>` now implements `AsRef<[T]>`][82771]
 - [Arrays of any length now implement `IntoIterator`.][84147]
-  Currently `.into_iter()` will return `slice::Iter` (`Item=&T`), but
-  this may change in a future edition to return `Item=T`.
-- [`NonZero<T>::{leading_zeros, trailing_zeros}` is now `const`.][84082]
+  Currently call `.into_iter()` as a method on an array will
+  return `impl Iterator<Item=&T>`, but this may change in a
+  future edition to change `Item` to `T`. Calling `IntoIterator::into_iter`
+  directly on arrays will provide `impl Iterator<Item=T>` as expected.
+- [`leading_zeros`, and `trailing_zeros` are now available on all
+  `NonZero` integer types.][84082]
 - [`{f32, f64}::from_str` now parse and print special values
   (`NaN`, `-0`) according to IEEE RFC 754.][78618]
 - [You can now index into slices using `(Bound<usize>, Bound<usize>)`.][77704]
@@ -109,8 +112,10 @@ Rustdoc
 Compatibility Notes
 -------------------
 - [Implement token-based handling of attributes during expansion][82608]
-- [`Ipv4::from_str` will now reject octal format IP addresses.][83652] The octal format
-  can lead to confusion and potential security vulnerabilities and [is no longer recommended][ietf6943].
+- [`Ipv4::from_str` will now reject octal format IP addresses in addition
+  to rejecting hexadecimal IP addresses.][83652] The octal format can lead
+  to confusion and potential security vulnerabilities and [is no
+  longer recommended][ietf6943].
 
 
 Internal Only