If safety and immunogenicity is confirmed, and pending authorization or approval from regulators, we hope to submit the vaccine for potential Emergency Use Authorization (EUA) to the U.S. Food and Drug Administration (FDA) sometime in the September-October timeframe for children 5 to 11, and soon after for 6 months to 5.

Source: Studies in Additional Populations - Pfizer

This is the first official timeline that I’ve seen. I hope it goes well!