Update changelog for 2021.9.0b2

changelog/2021.9.0.rst

@@ -23,6 +23,12 @@ API Encryption
 will need to upgrade their client libraries (e.g. ``aioesphomeapi``) before they can connect and communicate to
 devices with encryption. This is scheduled to be available in Home Assistant 2021.10.
 
+Git Packages
+------------
+
+:ref:`Packages<config-git_packages>` have been extended to allow loading (multiple) YAML file(s) from a git repo.
+Take a look at the examples to see how to use them.
+
 Midea AC
 --------
 
@@ -65,6 +71,12 @@ Breaking Changes
 - Remove last_reset_type and convert all those sensors to TOTAL_INCREASING :esphomepr:`2233` by :ghuser:`jesserockz` (breaking-change)
 - Midea support v2 :esphomepr:`2188` by :ghuser:`dudanov` (breaking-change)
 
+Beta Fixes
+^^^^^^^^^^
+
+- Fix a few ESP32-C3 compiler issues :esphomepr:`2265` by :ghuser:`jesserockz`
+- sm300d2: Accept (undocumented) 0x80 checksum offset. :esphomepr:`2263` by :ghuser:`poptix`
+
 All changes
 ^^^^^^^^^^^
 
@@ -131,6 +143,8 @@ All changes
 - pm1006: add support for sending a measurement request :esphomepr:`2214` by :ghuser:`Habbie`
 - SGP40 sensor start-up fix :esphomepr:`2178` by :ghuser:`kbx81`
 - PMSA003i Update state_class and async :esphomepr:`2216` by :ghuser:`sjtrny`
+- Fix a few ESP32-C3 compiler issues :esphomepr:`2265` by :ghuser:`jesserockz`
+- sm300d2: Accept (undocumented) 0x80 checksum offset. :esphomepr:`2263` by :ghuser:`poptix`
 
 Past Changelogs
 ---------------

guides/configuration-types.rst

@@ -349,11 +349,14 @@ merged with the services definitions from main config file.
     switch:
       - !include common/switch/restart_switch.config.yaml
 
+.. _config-git_packages:
 
 Remote/git Packages
 *******************
 
 Packages can also be loaded from a git repository by utilizing the correct config syntax.
+:ref:`config-substitutions` can be used inside the remote packages which allows users to override
+them locally with their own subsitution value.
 
 .. code-block:: yaml