Use Hover Links to Quickly Access Related Lists on Feed-Based Layout Detail Views

We’ve added hover links to the top of the details view for feed-based layouts, making it easier to work with related lists with less scrolling. Now you don’t have to choose between using feed-based layouts and giving your users the functionality hover links provide.
Available in: Enterprise, Performance, Unlimited, and Developer Editions

When users hover their mouse over the name of a related list, entries in the list and action buttons related to it appear.

related list hover links

Related list hovers appear on the details view for feed-based layouts only if there are no tools or components (such as custom buttons or links) in the left sidebar of the layout’s feed view.

For information on customizing feed-based layouts, see Create Feed-Based Page Layouts.