There will be, we definitely need testing. But there are a lot of variables all converging and it may not be like in the right order we want. As I currently see it something like:
1. We're trying to get apps live asap (if people find it, fine, or maybe I keep it unlisted)
2. Beta team will push issues and such
3, Once beta team is happy and we've squashed what we could, we make a formal announcement
Also possible is that we just push apps live and beta team helps find bugs after we post it. App more or less already works "fine" but we want strong confidence behind it (hence why a beta process is always to be preferred)