Post date: Feb 08, 2021 3:23:19 PM
I miscalculated and accidentally released the Spring '21 / API v51.0 update prematurely as it's not completely rolled out to all instances/orgs. I've pulled the 2.1.5.9 build and reissued 2.1.5.8 as 2.1.6.0 to force those who got the intermediate update to revert back to the previous build. My sincere apologies if you were affected by this mistake. The Spring '21 / API v51.0 update will be made available again once all instances and orgs have been upgraded.