OpenXR SDK 1.0.20 (2021-10-04)release-1.0.20

This release includes a proposed cross-vendor OpenXR loader for Android,
Android build system for hello_xr, and a number of new vendor
extensions.

-   Registry
    -   Add new XR_HTCX_vive_tracker_interaction provisional vendor
        extension. (internal MR 1983)
    -   Add new XR_VARJO_marker_tracking vendor extension. (internal MR
        2129)
    -   Add new XR_FB_triangle_mesh vendor extension. (internal MR 2130)
    -   Add new XR_FB_passthrough vendor extension. (internal MR 2130)
    -   Reserve vendor extensions for Facebook. (internal MR 2131)
    -   Reserve a vendor extension for Almalence. (OpenXR-Docs PR 99)
    -   XR_FB_color_space: Fix XML markup to indicate that
        XrSystemColorSpacePropertiesFB is chained to XrSystemProperties.
        (internal MR 2143)
-   SDK
    -   Loader specification: Describe a cross-vendor loader for use on
        Android. (internal MR 1949, internal issue 1425)
    -   hello_xr: Add Android build system, using new cross-vendor
        loader, and make some improvements/fixes. (internal MR 1949,
        internal issue 1425)
    -   loader: Implement cross-vendor loader for Android, with AAR
        Prefab packaging. (internal MR 1949, internal issue 1425)

1 files changed, 33 insertions, 0 deletions

diff --git a/CHANGELOG.SDK.md b/CHANGELOG.SDK.md
index fdfa756..1f14af9 100644
--- a/CHANGELOG.SDK.md
+++ b/CHANGELOG.SDK.md
@@ -19,6 +19,39 @@ along with any public pull requests that have been accepted.
 In this repository in particular, since it is primarily software,
 pull requests may be integrated as they are accepted even between periodic updates.
 
+## OpenXR SDK 1.0.20 (2021-10-04)
+
+This release includes a proposed cross-vendor OpenXR loader for Android, Android
+build system for hello_xr, and a number of new vendor extensions.
+
+- Registry
+  - Add new `XR_HTCX_vive_tracker_interaction` provisional vendor extension.
+    ([internal MR 1983](https://gitlab.khronos.org/openxr/openxr/merge_requests/1983))
+  - Add new `XR_VARJO_marker_tracking` vendor extension.
+    ([internal MR 2129](https://gitlab.khronos.org/openxr/openxr/merge_requests/2129))
+  - Add new `XR_FB_triangle_mesh` vendor extension.
+    ([internal MR 2130](https://gitlab.khronos.org/openxr/openxr/merge_requests/2130))
+  - Add new `XR_FB_passthrough` vendor extension.
+    ([internal MR 2130](https://gitlab.khronos.org/openxr/openxr/merge_requests/2130))
+  - Reserve vendor extensions for Facebook.
+    ([internal MR 2131](https://gitlab.khronos.org/openxr/openxr/merge_requests/2131))
+  - Reserve a vendor extension for Almalence.
+    ([OpenXR-Docs PR 99](https://github.com/KhronosGroup/OpenXR-Docs/pull/99))
+  - XR_FB_color_space: Fix XML markup to indicate that
+    `XrSystemColorSpacePropertiesFB` is chained to `XrSystemProperties`.
+    ([internal MR 2143](https://gitlab.khronos.org/openxr/openxr/merge_requests/2143))
+- SDK
+  - Loader specification: Describe a cross-vendor loader for use on Android.
+    ([internal MR 1949](https://gitlab.khronos.org/openxr/openxr/merge_requests/1949),
+    [internal issue 1425](https://gitlab.khronos.org/openxr/openxr/issues/1425))
+  - hello_xr: Add Android build system, using new cross-vendor loader, and make
+    some improvements/fixes.
+    ([internal MR 1949](https://gitlab.khronos.org/openxr/openxr/merge_requests/1949),
+    [internal issue 1425](https://gitlab.khronos.org/openxr/openxr/issues/1425))
+  - loader: Implement cross-vendor loader for Android, with AAR Prefab packaging.
+    ([internal MR 1949](https://gitlab.khronos.org/openxr/openxr/merge_requests/1949),
+    [internal issue 1425](https://gitlab.khronos.org/openxr/openxr/issues/1425))
+
 ## OpenXR SDK 1.0.19 (2021-08-24)
 
 This release features a number of new or updated vendor extensions, as well as