Plex has overhauled its apps from the ground up to make them easier to navigate. The teams says it will be able to roll out new features faster as well.
Yeah I can't see a file / folder view on the new client. Not that I saw one on the old android client either.
Must admit the new app is more responsive than the old version on my P7P however having "new on XYZ" service that I don't have is a shit addition to the new client.