I published an extension which is already published with a version name like 2.0.0-beta.0. Then, I just added a new icon to make them look different.
This beta extension was published as private only for trusted testers. I didn't put a description on it nor screenshots.
Guess what? The beta extension was reject.
Reason: no description provided.
I'm going to try again with a description. By the way, these private option should be 'locked'.
I mean, once you publish an extension as private, it can be converted to public.
This would be a nice feature.