A new release of the Ubuntu Cloud Images for stable Ubuntu release 18.04 LTS (Bionic Beaver) 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 These new images superseded the existing images [2].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: 4.15.0.169.158 => 4.15.0.171.160 
 * linux-signed: 4.15.0-169.177 => 4.15.0-171.180 


The following is a complete changelog for this image.
new: {'linux-headers-4.15.0-171-generic': '4.15.0-171.180', 'linux-headers-4.15.0-171': '4.15.0-171.180', 'linux-modules-4.15.0-171-generic': '4.15.0-171.180'}
removed: {'linux-modules-4.15.0-169-generic': '4.15.0-169.177', 'linux-headers-4.15.0-169-generic': '4.15.0-169.177', 'linux-headers-4.15.0-169': '4.15.0-169.177'}
changed: ['linux-headers-generic', 'linux-headers-virtual', 'linux-image-4.15.0-171-generic', 'linux-image-virtual', 'linux-virtual']
new snaps: {}
removed snaps: {}
changed snaps: []
==== linux-meta: 4.15.0.169.158 => 4.15.0.171.160 ====
====     linux-headers-generic linux-headers-virtual linux-image-virtual linux-virtual
  * Bump ABI 4.15.0-171
  * Bump ABI 4.15.0-170
==== linux-signed: 4.15.0-169.177 => 4.15.0-171.180 ====
====     linux-image-4.15.0-171-generic
  * Master version: 4.15.0-171.180
  * Master version: 4.15.0-170.178

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[1] http://cloud-images.ubuntu.com/releases/bionic/release-20220308/
[2] http://cloud-images.ubuntu.com/releases/bionic/release-20220302/