This rollout has been pretty awful, like how I lost all my permissions and logging in to the new interface, I had no access to see anything and had to push back newsletters by a day until my access was granted again.
But on the final review page, the preview of the email is blank, and the spot where it shows your email contact lists, that is blank as well, so you click on it to go view your lists, and you have to slowly navigate back to the review page instead of being able to jump back to that page.
See the screenshot showing the issue, also, with the inefficiency of how the page is laid out, I wasn't able to get a screenshot of both issues well, the page is way too long and the content is too large and spread out, so you have to scroll so much with all the pages. It's just not this page that is too long and you have to scroll to see very little content, with the amount of content on the pages, you shouldn't have to scroll.