All sites check for available updates on the hour, every two hours

Note: The point of the test is to make sure that the upgrade step works as expected in two different scenarios. Default schedule is reset during the upgrade Prepare a fresh default installation of a recent released version. Log in as admin. Go to Site administration > Server > Tasks > Scheduled tasks. Locate the "Check for updates" (\core\task\check_for_updates_task) and confirm it is using the default schedule - minute: 0, hour: */2 Upgrade the site to the patched version. Locate the "Check for updates" task again. TEST Check that the task is now using a new schedule and both minute and hour is set to a random value. Custom schedule not affected by the upgrade Prepare a fresh default installation of a recent released version. Log in as admin. Go to Site administration > Server > Tasks > Scheduled tasks. Change the schedule of the "Check for updates" (\core\task\check_for_updates_task) to some non-default value. Upgrade the site to the patched version. Locate the "Check for updates" task again. TEST Check that the task is still using your custom schedule and was not changed during the upgrade.