Version 1 Hub (v1) path forward - will it function

From Announcement | Changes to our Legacy SmartThings Platform in Phase 2:

  • Retire select legacy hubs – Don’t worry, affected users will have plenty of time to move to a newer version of Hub.

Consensus is that includes the v1 hub, and that is likely to happen in early 2020.

But you have time to move to another hub! See here: