There’s a new option in the server configuration: when you browse your collection, you can decide whether to show tracks always in the order returned by the server or to sort them alphabetically when a folder contains more than one album.
On iOS, CarPlay support has been modernized for iOS 14+. Also, Internet radio stations are now available in CarPlay too.
On macOS, when you close Soundwaves’ window, it won’t quit: it’ll keep stay hidden and keep on playing. Use Cmd Q to quit.