Time Machine will no longer support Time Capsule formatted with AFP Apple Filing Protocol
AirPort Extreme Base Station or Time Capsule
These solutions are no longer recommended, because they use Apple Filing Protocol (AFP), which won't be supported in a future version of macOS.
Will macOS future versions allow me to format my Time Capsule disk on my WiFi network using one of the new file formats or protocols the new versions will support? If not, why not? Isn't a disk just a disk and can Apple simply not tell me my old disk format is no longer supported and then display the new formatting options and allow me to select one so my old disk device will be formatted with the new protocol? And then Apple could simply allow me to backup my MacBook just like I have always backed it up, using Time Machine, which I love and my Time Capsule WiFi router and backup system that are all rolled into one, simple and elegant and easy for customers like me to use like Apple is supposed to be. Am I missing something here?