PEP 814: Address feedback from SC

peps/pep-0814.rst

@@ -251,7 +251,8 @@ Possible candidates for ``frozendict`` in the stdlib
 We have identified several stdlib modules where adopting ``frozendict``
 can enhance safety and prevent unintended modifications by design. We
 also believe that there are additional potential use cases beyond the
-ones listed below.
+ones listed below. However, this does not mean that we intend to make
+these changes without the approval of the respective module maintainers.
 
 Note: it remains possible to bind again a variable to a new modified
 ``frozendict`` or a new mutable ``dict``.
@@ -362,15 +363,9 @@ Reference Implementation
 Thread Safety
 =============
 
-Once the ``frozendict`` is created, it is immutable and can be shared
-safely between threads without any synchronization.
-
-
-Future Work
-===========
-
-We are also going to make ``frozendict`` to be more efficient in terms
-of memory usage and performance compared to ``dict`` in future.
+Once a ``frozendict`` is created, its shallow immutability is guaranteed.
+This means it can be safely shared between threads without synchronization,
+as long as its values are not modified by other threads.
 
 
 Rejected Ideas