Update release notes based on feedback

* Move AAOS to core stack section
* Link to VHAL and AAOS upstream
* Make dashboard changes more detailed
* Update to latest WebView version
* Rearrange based on key features

.wordlist.txt

@@ -316,3 +316,4 @@ ZFS
 zpool
 Uber
 Unhold
+upscaling

reference/release-notes/1.21.0.md

@@ -10,12 +10,13 @@ The 1.21.0 release of Anbox Cloud brings the following features and improvements
 
 ### Core stack improvements
 
+* Android Automotive (AAOS) images with experimental VHAL support are available. See [Provided images](https://anbox-cloud.io/docs/reference/provided-images) for more details.
 * Initial support for installing Anbox Cloud Appliance on Ubuntu 24.04.<!--AC-2229-->
-* GL Async swap support is disabled by default. See [GL Async swap support](https://discourse.ubuntu.com/t/ams-configuration/20872#gl-async-swap-support-11) for more information.<!--AC-2228-->
 * Production support for Vulkan on NVIDIA GPUs is available but remains opt-in. Support must be explicitly enabled and set up. For instructions on enabling the VirGL rendering path for Vulkan support, see [How to enable VirGL](tbd).<!--AC-2152-->
 
   This release also provides [Renderdoc](https://github.com/baldurk/renderdoc) support for debugging purposes. See [Graphics debugging with renderdoc](tbd) for more information. <!--AC-2093-->
 * The NVIDIA UDA driver variant with version 545 or later can be installed with the Anbox Cloud Appliance by using the `nvidia-driver-series` and `use-nvidia-uda-driver` flags with the `anbox-cloud-appliance init` command.  <!--AC-2259-->
+* GL Async swap support is disabled by default. See [GL Async swap support](https://discourse.ubuntu.com/t/ams-configuration/20872#gl-async-swap-support-11) for more information.<!--AC-2228-->
 * In the [AMS HTTP API](https://anbox-cloud.github.io/latest/ams/), `/1.0` endpoint exposes the cluster ID and name to enable identifying a subcluster.<!--AC-2148-->
 * The [Anbox Cloud NFS operator](https://github.com/canonical/anbox-cloud-nfs-operator) charm now supports mounting EFS file system on AWS when you require Transport Layer Security (TLS). With an EFS file system, you can [configure](https://github.com/canonical/anbox-cloud-nfs-operator/blob/main/config.yaml) the charm with the following parameters:<!--AC-2119/2001-->
   - `mount_type` set to `efs`
@@ -26,19 +27,17 @@ The 1.21.0 release of Anbox Cloud brings the following features and improvements
 
 The following improvements are available in the Anbox Cloud dashboard for this release:
 
-* Custom instance creation
-* Support multiple subclusters from a single dashboard for large scale deployments
-* Experimental `upscaling` parameter in *Session* view
-* Experimental support for managing the Vehicle Hardware Abstraction Layer (VHAL) properties
-* Enhancements for better user experience
+* Launching an instance independent of a session is now possible using the Anbox Cloud dashboard.  This is especially useful for situations where you want to create an instance but do not want to stream anything. To do this, select the *Create Instance* button on the *Instances* view, provide the information required for instance creation and select *Create and Start*.
+* Support multiple subclusters from the dashboard for large scale deployments.
+* Client side upscaling is now available as an experimental feature.You can now add `upscaling` as a query parameter to your session URL. For example, `http://<ip_address_of_instance>/sessions/<session_ID>?upscaling=true`.
+* Experimental support for managing the [Vehicle Hardware Abstraction Layer (VHAL)](https://source.android.com/docs/automotive/vhal) properties for [AAOS](https://source.android.com/docs/automotive/start/what_automotive) images.
 * Enhancements for improved responsiveness, error handling and messages
 * Updated Python and Javascript dependencies.
 
 ### Other
 
-* Android Automotive (AAOS) images with experimental VHAL support are available. See [Provided images](https://anbox-cloud.io/docs/reference/provided-images) for more details.
 * Android security updates for February 2024 (see [Android Security Bulletin - February 2024](https://source.android.com/docs/security/bulletin/2024-02-01) for more information).<!--AC-2249-->
-* The Android WebView has been updated to [121.0.6167.101](https://chromereleases.googleblog.com/2024/01/chrome-for-android-update_0750350412.html).
+* The Android WebView has been updated to [121.0.6167.143](https://chromereleases.googleblog.com/2024/01/chrome-for-android-update_0251787784.html).
 
 ## Removed functionality