Gen 2 of Pokémon GO doesn't hit until (probably) tomorrow, but the game dropped an update today to get things ready for the biggest addition to the game yet. We've now got an item carousel, which allows you to select Razz Berries or Great/Ultra Balls without leaving the encounter screen. The carousel is one of those little things that ends up making a big difference. Similarly, I leaned on normal Poké Balls for the most part because I never felt like taking the time to select them. If you're excited about getting to the game as soon as possible after the new monsters hit, it's certainly recommended to get this update as soon as possible.

Source: Forbes February 16, 2017 22:37 UTC