A Showroom is your own space to display what you own — a room rather than a list.
A grid of cover thumbnails tells you what you have. A shelf tells you who you are. That is the whole point of a showroom: your library, arranged the way you want it, and shareable with someone who does not have an account.
What works today
Showrooms are live. Every account gets one, and books you own appear in it automatically. You do not need to do anything to set it up.
What is still coming
Deeper customisation — full 3D walkthrough spaces, custom room layouts, and displaying work from outside Published NFT — is still in progress. What is live now is the 2D/3D display of your own library, not a fully explorable environment.
Changes will be noted on What's New.