User blog comment:Jimothy The Limon/What My Just Dance Predictions Are For The Next 5 Years + More/@comment-5392675-20170319110927/@comment-24045334-20170319191502

It isn't about if JDN is a vaild main entry, it's just marketing. JD10 sounds bigger and better than JD9, so I'd be a good way to get people back in to the numbered naming style.

Example: Windows 8 was such a flop, Microsoft wanted to distance themself from it as much as possible, so they named their next os Windows 10. They didn't even give a valid reason for it, they just did it because it was better for marketing