Still in the early planning stages at this point.
Vague plan, to be verified:
- Get VisualEditor "good to go". – #§_VisualEditor_Q3_blockers
- Run a test (with community buy-in) to validate impact expectations – T90666
- Enable for a small %age of new users; verify impact and increase %age; repeat until done for all new users – T90664
- Enable for all IP users – T90663
After this is done, possible that we'll do T90665: Prompt existing users to enable VisualEditor for their account on the English Wikipedia.