No, it is a reasonable category. There is a huge distiction between things, which don't work yet, but you know that you can make them work and have even a schedule for doing them. And there are things, where you either don't have an idea yet how to make them work or cannot attach a schedule yet.

As with any software release: you have the list of things planned for the next release, even if they are not available yet and you have a list of things which definitely won't be in the next release.