diff --git a/doc/changes/xrt/mr.1275.md b/doc/changes/xrt/mr.1275.md
index 34375ff46..50a4bd99e 100644
--- a/doc/changes/xrt/mr.1275.md
+++ b/doc/changes/xrt/mr.1275.md
@@ -2,6 +2,7 @@
 - mr.1275
 - mr.1279
 - mr.1283
+- mr.1285
 ---
 
 Introduce @ref xrt_system_devices struct and @ref xrt_instance_create_system
diff --git a/doc/changes/xrt/mr.1285.md b/doc/changes/xrt/mr.1285.md
new file mode 100644
index 000000000..63d690206
--- /dev/null
+++ b/doc/changes/xrt/mr.1285.md
@@ -0,0 +1,5 @@
+Introduce @ref xrt_builder struct and various functions on @ref xrt_prober
+to support them. This is a follow up on the @ref xrt_system_devices changes.
+These make it much easier to build more complex all in one devices like WinMR
+and Rift-S. And moves a lot of contextual configuration out of generic drivers
+like the hand-tracker code needing to know which device it was being used by.