PreviewSmith can now create a release in App Store Connect, and write the copy that goes in it.
• Create a release — bump the version in Xcode and PreviewSmith offers to create it in App Store Connect: how it's released, a date if it's scheduled, the copyright, and the languages to create it in, taken from the ones your project is built for. The version and platform come from the project, so they can't disagree with what you built.
• Edit your App Store copy — the name, subtitle, promotional text, description, keywords, What's New and URLs are now editable, one language at a time, with a live count against each App Store Connect limit. Edited fields stay marked until you sync, a sync sends them, and anything you'd rather not send goes back to what App Store Connect last returned.
Both are available while App Store Connect still accepts changes to a version: before you submit it, or after a rejection.