Not only museums, but all people with an interest in or link to the profession and museum work in general, including curators and museum fans may register Museum-Domains.
A .museum domain name has had to reflect the name of the Museum according to the policies.
It's over.
You can register .museum domains also e.g. for events and single collections.
Museums can now register generic museum-domains like http://naturalhistory.museum
It is on the basis of "first come, first served" .
Hans-Peter Oswald of ICANN Registrar Secura:
"Please try us out. We make it easy to get Museum-Domain."
New domain names at the third level like http://www.specific.generic.museum are not offered anymore. The third level Museum-Domains, which exist, survive.
Marc Müller
https://www.domainregistry.de/... (English)
https://www.domainregistry.de/... (deutsch)