From b2c4d3d72165e98b6d9c1f797d5f7013280f515d Mon Sep 17 00:00:00 2001
From: Will Hunt <will@half-shot.uk>
Date: Mon, 8 Mar 2021 16:35:04 +0000
Subject: [PATCH] Warn that /register will soon require a type when called with
 an access token (#9559)

This notice is giving a heads up to the planned spec compliance fix https://github.com/matrix-org/synapse/pull/9548.
---
 CHANGES.md               | 6 ++++++
 changelog.d/9559.removal | 1 +
 2 files changed, 7 insertions(+)
 create mode 100644 changelog.d/9559.removal

diff --git a/CHANGES.md b/CHANGES.md
index 99e314c68..3f0c5685e 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,9 @@
+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)
 ===========================
 
diff --git a/changelog.d/9559.removal b/changelog.d/9559.removal
new file mode 100644
index 000000000..f97bf56dc
--- /dev/null
+++ b/changelog.d/9559.removal
@@ -0,0 +1 @@
+Registering an Application Service user without using the `m.login.application_service` login type will be unsupported in an upcoming Synapse release.