Pinterest redesigns its home feed to bring a new "watch" tab alongside its "browse" section. This new tab offers a full-screen feed of Idea Pins (a.k.a. multi-page, portrait video format similar). You will see the best Idea Pins relevant to your interests and preferences. As for the "browse" tab, Pinterest says it is "an evolution of Pinterest's traditional inspiration feed." This new look is rolling out to both Android and iOS users.
Source: Pinterest