The game is 9 years old, and the update hasn't even been released yet. Everyone complaining in here that all mods break is just making assumptions without any knowledge of what the update is actually gonna do to your mods. High chance it actually breaks a lot, but nobody can know that at this time.
Edit: I read an article from Nexus mods and the only mod guaranteed to break is F4SE, which will probably be updated to work on the updated soon after release, maybe the Mod Team can even get a preview of the version to get some work done ahead of time.
Everything else will have to see after the update is out.