Yes, but due to the multitude of UI changes, the game will just PLAY different, meaning that existing tutorials, while working up to and including 47.05, will not be 1:1 applicable to the premium version due to the different UI alone.
Tutorials have been non-1:1 before (even ignoring the new stuff that emerged on the scene, or occasionally what no longer exists in gameplay). It's only a matter of scale and the visual reorganisation of what functionality is the same.
Yes, there will be changes. And dedicated early-adopters (existing community or new discoverers) probably won't bother with the non-existent blow-by-blow guides as they bumble in, en-mass. And then interested guide-writers (old and new) will update, and probably cross-pollinate their experiences in a way that the pre-release access scheme could never really allow. I have faith in that process, and it seems to me that it doesn't introduce more problems than it actually solves (like last minute tweaks invalidating efforts).
And non-Early-Access people will always have to wait, however useful their contributions ultimately are. Either way, it'll be a scramble, and exciting... in different ways. Perhaps I'm just feeling far more egalitarian, not wishing to penalise some because they marginally miss the cut in accreditation, when the past shows it's not a necessary flourish to the release-process.
(I have absolutely no experience of Quickstart, I must say. I also have never really used LNP, but have enjoyed the delights of Dwarf Therapist and occasionally dabbled with DFHack, among the non-Guide 3rd-party contributions that
could benefit but I'm sure can adapt. Albeit that LNP's relationship with the Premium version content may be too complicated (if not logistically, then certainly licence-wise), depending upon decisions made beyond their control even if they
were invited to an EA evaluation.)