Illinois to restrict religious gatherings to 50 people until there’s a vaccine.
That is phase 5.
Phase 5 – Illinois Restored:
What it means: With a vaccine or highly effective treatment widely available or the elimination of any new cases over a sustained period, the economy fully reopens with safety precautions continuing.
When it begins: The only way Phase 5 will begin is with a vaccine, or a widely available and highly effective treatment, or with the elimination of any new cases over a sustained period.
What's allowed: Conventions, festivals and large events are permitted, and all businesses, schools, and places of recreation can open.
Restrictions: New safety guidance and procedures will be in place reflecting the lessons learned during the COVID-19 pandemic.
This is also by region and IL is broken down into 11 regions.