Ok; interesting that @MHaworthAEW didn’t see this, however it’s not an error or even a warning, but more of an “FYI”. The package should install fine for you and work without issue. If not, then we’ve got something to deal with.
Perhaps a development team member used their latest build to publlish. You could download and install a daily build to try:
Or they could have done this via custom upload (the advantage to being inside the factory) and posted from a non-existant build, or with a build flag that would trigger the warning in all cases (i.e. Dynamo 999.999.1).