Yes. It’s related to this “megathread”: Marketplace versioning with embedded resource
The idea is that it should be possible to offer multiple versions. It would then be possible to be notified when a new “stable” version is available, or to manually upgrade to “development versions”. If something doesn’t work, one could also downgrade.
The “split button” would only be displayed for add-ons where multiple versions exist that is marked as compatible with your version of OH.