Release 2021_015 is ready and will be rolled out during the specified timeframe.
See the Changelog
for information about the specific changes and impact of the release.
Note: releases themselves do not cause downtimes. If a change within a release requires downtime then every VM that is affected will schedule a maintenance period according to your projects' preferences and notify you with specific details about the downtime.
Check the "Impact" section of the changelog (linked above) to see potential causes of downtimes in a release.