The Unified Review Banner is one of the core components of the new review experience. In all current versions of Review Board, we have a draft banner for the review request and for each review/reply, each containing buttons for working on that specific draft, but this has led to confusion and limitations.
The Unified Review Banner aims to improve upon what we have by providing a common set of buttons for working with all drafts, a high-level overview of your review process, settings for customizing the display of what you're looking at, and a starting place for beginning a review.
For more information, see the design document:
This is divided into a few sub-projects, in order to help keep the development on track. See the following pages for the details on each:
Unified Review Banner: Base Shell