Changelog

Following our Xcode image retention policy, Xcode 14.3.1, 26.3.0, 26.2.0, and 26.1.1 have been marked as deprecated and will be removed on October 30th, 2026.

We will be performing 24 hour brownouts from 00:00:01 to 23:59:59 UTC during which these images will be unavailable. The brownout and deprecation schedule can be found below.

You can opt-out of brownouts and continue using these images until they are removed on October 30th, 2026, by following our opt-out instructions.

Following our Xcode image retention policy we will be deprecating both Xcode 16.3 and Xcode 26.0.1 on June 2nd, 2026.

We will be performing 24 hour brownouts from 00:00:01 to 23:59:59 UTC during which these images will be unavailable. The brownout and deprecation schedule can be found below.

Following our Xcode image retention policy we will be deprecating Xcode 16.2 on January 14th 2026.

We will be performing 24 hour brownouts from 00:00:01 to 23:59:59 UTC during which these images will be unavailable. The brownout and deprecation schedule can be found below.

Following our updated Xcode image retention policy we will be deprecating Xcode versions which are no longer supported. We will additionally be performing 24 hour brownouts from 00:00:01 to 23:59:59 UTC during which these images will be unavailable. The brownout and deprecation schedule can be found below.

What’s New

On February 15, 2022, the Ubuntu 14.04 and 16.04 Linux VM images used with our machine executor were deprecated, meaning there will be no new releases or support for these images moving forward. When these images reach end of life (EOL) on May 31, 2022, any pipelines that utilize Ubuntu 14.04 or 16.04 images will fail.

In order to prevent unexpected failures and enable you to begin moving to newer images, CircleCI’s Ubuntu 14.04 and 16.04 Linux virtual machine (VM) images will be temporarily unavailable in late March 2022 and late April 2022, and will become permanently unavailable as of May 31, 2022. During these temporary “brown-out” periods, if you are currently using either of these images, be sure to update your config with a newer Ubuntu machine image before the 14.04 and 16.04 images are removed at the end of May 2022.

For more information about how CircleCI will manage these updates, please see the Deprecating Ubuntu 14.04 and 16.04 blog post.

What’s New

CircleCI will be deprecating all legacy convenience images on December 31, 2021 and moving to supporting only next-gen convenience images. This change is being made to better serve our customers, while ensuring that these next-gen convenience images are consistently reliable. The next-gen CircleCI convenience images are designed from the ground up for an execution environment, and designed to be faster, more efficient, and most importantly, more reliable.

For more information about this upcoming change, please refer to the following Discuss post, which can be found here