Pokémon GO is being updated to a new version across all capable iOS and Android devices. The latest update is being rolled out to iOS and Android devices, respectively. According to patch notes from the development team at Niantic, the latest update implements various bug fixes and improvements for an overall smoother experience.
What’s New in Version 1.183.0 (iOS)
Trainers, there’s always something new in Pokémon GO!
— Hoopa is making more mischief! For the final part of this year’s Ultra Unlock, Hoopa has used its rings to summon the Legendary Pokémon Zacian and Zamazenta to the world of Pokémon GO!
What’s New in Version 0.215.1 (Android)
– Ultra Unlock Part 1: Time will take place from July 23 at 10:00 a.m. to August 3 at 8:00 p.m. local time. During this event, Pokémon from various eras will be appearing more often.
– Address Book Import: Soon, you’ll be able to add friends from your contact list.
– In-app support is now located at the top of the Settings menu.
– Collection Challenges now include a window explaining the challenge’s icons.
– You can now skip the Team GO Rocket battle-reward animations.
Source: Official Pokémon GO support page