A new release of the Ubuntu Cloud Images for stable Ubuntu release 20.04 LTS (Focal Fossa) 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 These new images superseded the existing images [2].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:
 * linux-meta: 5.4.0.45.49 => 5.4.0.47.50 
 * linux-signed: 5.4.0-45.49 => 5.4.0-47.51 
 * ubuntu-release-upgrader: 1:20.04.24 => 1:20.04.25 


The following is a complete changelog for this image.
new: {'linux-headers-5.4.0-47-generic': '5.4.0-47.51', 'linux-modules-5.4.0-47-generic': '5.4.0-47.51', 'linux-headers-5.4.0-47': '5.4.0-47.51'}
removed: {'linux-headers-5.4.0-45': '5.4.0-45.49', 'linux-modules-5.4.0-45-generic': '5.4.0-45.49', 'linux-headers-5.4.0-45-generic': '5.4.0-45.49'}
changed: ['linux-headers-generic', 'linux-headers-virtual', 'linux-image-5.4.0-47-generic', 'linux-image-virtual', 'linux-virtual', 'python3-distupgrade', 'ubuntu-release-upgrader-core']
new snaps: {}
removed snaps: {}
changed snaps: []
==== linux-meta: 5.4.0.45.49 => 5.4.0.47.50 ====
====     linux-headers-generic linux-headers-virtual linux-image-virtual linux-virtual
  * Bump ABI 5.4.0-47
==== linux-signed: 5.4.0-45.49 => 5.4.0-47.51 ====
====     linux-image-5.4.0-47-generic
  * Master version: 5.4.0-47.51
==== ubuntu-release-upgrader: 1:20.04.24 => 1:20.04.25 ====
====     python3-distupgrade ubuntu-release-upgrader-core
  * DistUpgrade/DistUpgradeQuirks.py: Add a check for ROS packages being
    installed and warn that upgrades with them installed are not likely to
    work. Thanks to Kyle Fazzari for the patch. (LP: #1611737)
  * DistUpgrade/DistUpgradeController.py: do what the comment says and really
    back up /etc/apt/sources.list first. (LP: #1888916)

--
[1] http://cloud-images.ubuntu.com/releases/focal/release-20200907/
[2] http://cloud-images.ubuntu.com/releases/focal/release-20200902/