This bundle of features is super cool, I think you're gonna love it.
In Statamic 3 you'll be able to not only link to related entries (like in v2), but you'll also be able to create and edit content inline without ever leaving the publish form.
See it in action below!
And yes, you can edit related entries while editing inline entries. Recursive Five! 🙌
I'm sure you can imagine all sorts of uses for this. Stub out new content and link to it having to leave and come back later, jump right into related content and tweak it when "upstream" details change, and so on. Use it wisely.