Pull up appservice login deprecation notice

CHANGES.md

@@ -1,6 +1,13 @@
 Synapse 1.30.0rc1 (2021-03-16)
 ==============================
 
+Note that this release deprecates the ability for appservices to
+call `POST /_matrix/client/r0/register`  without the body parameter `type`. Appservice
+developers should use a `type` value of `m.login.application_service` as
+per [the spec](https://matrix.org/docs/spec/application_service/r0.1.2#server-admin-style-permissions).
+In future releases, calling this endpoint with an access token - but without a `m.login.application_service`
+type - will fail.
+
 Features
 --------
 
@@ -68,12 +75,6 @@ Internal Changes
 - Prevent attempting to bundle aggregations for state events in /context APIs. ([\#9619](https://github.com/matrix-org/synapse/issues/9619))
 
 
-Removal warning
----------------
-
-Note that this release deprecates the ability for appservices to call `POST /_matrix/client/r0/register`  without the body parameter `type`. Appservice developers should use a `type` value of `m.login.application_service` as per the spec. In future releases, calling this endpoint with an access token but
-without a valid type will fail.
-
 Synapse 1.29.0 (2021-03-08)
 ===========================