CD case storage solution

In the past I have stored my CD collection in shelving that slides into the space between two walls - similar to a pocket door. Nice neat out of sight but easily accessible. We are renovating and that space will have to go. The new area doesn’t have the wall room or depth for the same arrangement so I am looking for a system that will let me slide the shelving out of the wall perpendicularly. Given the location, the sliding system will have to be ceiling mounted. Capacity ~500 cases.
Any ideas greatly appreciated!!