Any chance of subpages yet?

Any chance of subpages yet?

Hi,
I have been waiting for introduction of subpages in Nimbus (like Onenote) for several years now.
I was told it is in the pipeline.

Any updates please?

Right now, it is quite tedious to have a page for every related content.
Prefer hierarchy organization.

How do other users find it comfortable? Am I missing something?