Apple announced new App Store submission experience previously, and these changes are now rolling out to all developers.
Account holder should enable new experience when ready.
Last year, we introduced an updated way to submit apps, in-app events, custom product pages, and product page optimization tests for review in App Store Connect. Starting January 25, 2022, the submission experience will be automatically updated for all App Store Connect accounts. You’ll be able to submit multiple items, submit without needing a new app version, view past submissions, and more.
If you’re ready to try it beforehand, Apple Developer Program Account Holders can enable the experience, which applies the update for all team members. No action is required if you’re already using the updated experience or you prefer to wait for the automatic update.Apple Developer
Apple Developer: About the updated App Store submission experience
Developer:Check new experience, when available.
QA engineer:Business as usual.
PM/DM:Check new experience, enable it when ready.