diff --git a/documentation/releasenotes.rst b/documentation/releasenotes.rst
index f2dde1e..be1014f 100644
--- a/documentation/releasenotes.rst
+++ b/documentation/releasenotes.rst
@@ -18,9 +18,7 @@ Release Notes
  * Add server ignore address list.  cf. `pvxs::server::Config::ignoreAddrs`.  Configured from $EPICS_PVAS_IGNORE_ADDR_LIST.
  * Allow TCP timeout to be configured.
  * Add `pvxs::client::Context::connect()` to force Channel creation and retention.
- * Add `pvxs::client::Subscription::shared_from_this()` which can be used with eg. `pvxs::MPMCFIFO` (also newly added).
- * Add per Server/Context statistical reporting of network bandwidth used by TCP connection, and by Channel.
-   cf. `pvxs::client::Context::report()` and `pvxs::server::Server::report()`.
+ * Add `pvxs::client::Subscription::shared_from_this()` which can be used with eg. the new `pvxs::MPMCFIFO` to create a work queue.
 
 0.1.5 (May 2021)
 ----------------
diff --git a/src/pvxs/client.h b/src/pvxs/client.h
index a65909a..b41c242 100644
--- a/src/pvxs/client.h
+++ b/src/pvxs/client.h
@@ -119,7 +119,7 @@ struct PVXS_API Operation {
 
     //! Explicitly cancel a pending operation.
     //! Blocks until an in-progress callback has completed.
-    //! @returns true if the operation was cancelled, or false if already complete.
+    //! @returns true if the operation was canceled, or false if already complete.
     virtual bool cancel() =0;
 
     /** @brief Block until Operation completion
@@ -206,6 +206,7 @@ public:
     //! Return strong internal reference which will not prevent
     //! implicit cancellation when the last reference returned
     //! by exec() is released.
+    //! @since UNRELEASED
     virtual std::shared_ptr<Subscription> shared_from_this() const =0;
 };