Rescuezilla 2.1 comes two months after version 2.0, but it's not just a point release. In fact, this is a major update to Rescuezilla, which has been rebased on the latest Ubuntu 20.10 (Groovy Gorilla) operating system. The biggest change in this release is the introduction of the Image Explorer utility that makes it easier to extract files from backup images by allowing you to mount partclone images. While still in beta, Image Explorer is currently based on partclone-nbd, but future versions will be based on partclone-utils.
Rescuezilla 2.1 comes two months after version 2.0, but it's not just a point release