New in Pokémon Go is a Buddy feature that lets users choose a favorite Pokémon as a buddy. The Pokémon acting as a buddy will earn candy after a certain distance is traveled, making it much easier to get candies for upgrading rare Pokémon.
Today's update also fixes a few minor bugs and adds support for the Pokémon Go Plus accessory. Pokémon Go Plus is a wrist-worn device that's designed to let users discover Pokémon without the need to have the smartphone app open. It will be available starting next week.
In the future, Pokémon Go will be coming to the Apple Watch, as was announced at Apple's September 7 event. The Apple Watch app, like the Pokémon Go Plus accessory, will alert users when wild Pokémon appear, it will show information about hatching eggs, and send alerts when a Pokéstop is nearby. Pokéstops can even be accessed directly on the wrist without the need to open the Pokémon Go iPhone app.
Pokémon Go can be downloaded from the App Store for free. [Direct Link]