Bump. Very much agree with the above (as do many others, it seems, based on the numerous reviews on the app in the iOS App Store). It's a notable step backward in usability, not just because of te comments above, but because the user must now scan in two directions (horizontally AND vertically) instead of just one to see what is open. The titles on the new tiles are also in a much smaller font, which is (unintentionally) user-hostile towards older users.
The best solution would be to make the layout configuration an option and let each user choose what they prefer, but if I had to choose one or the other, then the old list-style layout would be the one that I think would best support the broad array of users relying on the app each day.