A new release of the Ubuntu Cloud Images for stable Ubuntu release 20.10 (Groovy Gorilla) is available at [1]. These new images superseded the existing images [2]. Images are available for download or immediate use on EC2 via publish AMI ids. Users who wish to update their existing installations can do so with:
   'sudo apt-get update && sudo apt-get dist-upgrade && sudo reboot'.

The following packages have been updated. Please see the full changelogs
for a complete listing of changes:
 * alsa-lib: 1.2.3.2-1ubuntu3 => 1.2.3.2-1ubuntu3.1 
 * alsa-ucm-conf: 1.2.2-1ubuntu5 => 1.2.2-1ubuntu5.1 
 * apport: 2.20.11-0ubuntu50.1 => 2.20.11-0ubuntu50.2 
 * busybox: 1:1.30.1-4ubuntu9 => 1:1.30.1-4ubuntu9.1 
 * grub2: 2.04-1ubuntu35 => 2.04-1ubuntu35.1 
 * grub2-signed: 1.155+2.04-1ubuntu35 => 1.155.1+2.04-1ubuntu35.1 
 * ubuntu-release-upgrader: 1:20.10.13 => 1:20.10.14 


The following is a complete changelog for this image.
new: {}
removed: {}
changed: ['alsa-ucm-conf', 'apport', 'busybox-initramfs', 'busybox-static', 'grub-common', 'grub-efi-amd64-bin', 'grub-efi-amd64-signed', 'grub-pc', 'grub-pc-bin', 'grub2-common', 'libasound2-data', 'libasound2:amd64', 'python3-apport', 'python3-distupgrade', 'python3-problem-report', 'ubuntu-release-upgrader-core']
new snaps: {}
removed snaps: {}
changed snaps: ['lxd']
==== alsa-lib: 1.2.3.2-1ubuntu3 => 1.2.3.2-1ubuntu3.1 ====
====     libasound2-data libasound2:amd64
  * d/p/0001-ucm-handle-correctly-Linked-configuration.patch
    - If the sound card is Linked in the ucm, don't return error
      in the check_empty_configuration(). So far the AMD Ryzen
      machines with acp sound card need this fix, otherwise the
      pulseaudio will fail to load ucm on those machines and the whole
      audio can't work. (LP: #1901922)
==== alsa-ucm-conf: 1.2.2-1ubuntu5 => 1.2.2-1ubuntu5.1 ====
====     alsa-ucm-conf
  * d/p/0001-sof-hda-dsp-add-initial-kcontrol-values.patch
  * d/p/0002-sof-hda-dsp-make-the-boot-init-optional-for-all-cont.patch
  * d/p/0003-sof-hda-dsp-Set-Master-Playback-Switch-on-in-the-Boo.patch
  * d/p/0004-sof-hda-dsp-Increase-the-speaker-output-volume-in-th.patch
    Unmute the master playback switch and increase the init output volume,
    otherwise the playback will be muted after freshly install the OS if
    the machine uses ucm to configure the audio mixers, and the init playback
    output volume is too low after freshly install the OS.
    (LP: #1901922)
==== apport: 2.20.11-0ubuntu50.1 => 2.20.11-0ubuntu50.2 ====
====     apport python3-apport python3-problem-report
  * data/apport: Modify the check for whether or not a process is running in
    the same namespace so that crashes from processes running protected in the
    system.slice are considered as being from the same namespace. (LP: #1870060)
==== busybox: 1:1.30.1-4ubuntu9 => 1:1.30.1-4ubuntu9.1 ====
====     busybox-initramfs busybox-static
  * cherry-pick settimeofday for glibc v2.31+ compatibility fix for upstream
    (LP: #1888543)
==== grub2: 2.04-1ubuntu35 => 2.04-1ubuntu35.1 ====
====     grub-common grub-efi-amd64-bin grub-pc grub-pc-bin grub2-common
  * Avoid "EFI stub: FIRMWARE BUG" message when booting >= 5.7 kernels
    on arm64 by setting the image base address before jumping to the
    PE/COFF entry point LP: #1900774
  * Fix tftp timeouts when fetching large files. LP: #1900773
==== grub2-signed: 1.155+2.04-1ubuntu35 => 1.155.1+2.04-1ubuntu35.1 ====
====     grub-efi-amd64-signed
  * Rebuild against grub2 2.04-1ubuntu35.1
==== ubuntu-release-upgrader: 1:20.10.13 => 1:20.10.14 ====
====     python3-distupgrade ubuntu-release-upgrader-core
  * DistUpgrade/dist-upgrade.py: When running the release upgrade do not add
    user site directory to sys.path thereby preventing user python packages
    from interfering with the upgrade process. (LP: #1848829) 

--
[1] http://cloud-images.ubuntu.com/releases/groovy/release-20201126/
[2] http://cloud-images.ubuntu.com/releases/groovy/release-20201118/