Okay, this one is pretty nice. Remember Page Layout? Well, you can now add tabs—aka new "views"—to each of your database items. This is a new way to visualize your data, making it cleaner and less cluttered. It also simplifies self-referential filtering (ooooh that nasty word) as it lets you visualize linked databases related to your items.

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How?

1. Click Customize Layout
2. Access Page Settings at the top-left
3. In the right panel, switch from "Simple" to "Tabbed"
4. In the main view (see screenshot below), click the "+" button to add new tabs and customize them as needed

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PS: Be aware that on new tabs/views, you won't have your page content (only on the first one)