It features a new home screen and Watchtower.
As a longtime user of 1Password 7, the redesign was immediately obvious when I opened the beta version of the app. As far as I can tell, almost every icon has been changed to be a little more fun and colorful, and the interface feels more modern now.1Password 7 opened to a favorites screen with a few recently used passwords. Other than marking or unmarking logins as favorites, there wasn’t much you could do to customize the screen.
1Password 8, on the other hand, has a home screen that lets you access things like your vaults, categories, and lists of recently created or modified passwords. You can also change it to fit how you organize and access your passwords — if you’re a big user of categories, favorites, and tags, you can move those options to the top. If you dump everything into one folder, you can hide everything but “All Items”.