Nov 12 2017
Nov 15 2017
All Office 365 Enterprise suites, (including F1) provide view-only Visio Online functionality.
To create or edit a document, a user would need either Visio Online Plan 1 (Web app editing), or Visio Online Plan 2 (Windows desktop client editing).
Visio and Project have always been licensed externally to the Office suite - I wouldn't expect this to change anytime soon.
Hope that helps.