Sonatype Nexus Repository versions 3.90.2 and 3.70.5 are now available.
These releases introduce an Instance Migrator that allows Nexus Repository 3.70.5 deployments to move to Nexus Repository Cloud or Nexus Repository 3.90.2+ without downtime.
For full details, see the Nexus Repository 3.90.2 and Nexus Repository 3.70.5 Release Notes.