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General availability: Azure Sphere version 23.05 is delayed, new OS will be issued to Retail Eval

Published date: May 30, 2023

The Azure Sphere 23.05 release, originally expected on May 24, is delayed.  A compatibility risk concerning library version dependencies was found by quality assurance tests, and we will issue a new OS to fix this. We expect the new OS to go live in Retail Eval on 5 June and we are planning to use a shorter Retail Eval period of seven days. 

The retail evaluation period provides a period for backwards compatibility testing. During this time, customers can verify that applications and devices operate properly with a new OS before it's deployed broadly via the Retail feed. The Retail feed will continue to deliver OS version 23.02 until we publish the 23.05 update.

Areas of special focus for compatibility testing with the 23.05 release should include apps and functionality utilizing:

  • Azure IoT Hub
  • wolfSSL API calls (such as custom TLS Client or Server)
  • TLS connections
  • UART

For more information on Azure Sphere OS feeds and setting up an evaluation device group, see Azure Sphere OS feeds and Set up devices for OS evaluation

For self-help inquiries or technical support, review the Azure Sphere support options

  • Operating System
  • SDK and Tools