Niantic has posted on the official Pokémon Go blog that the game is currently “in the process of being updated” with the latest version, i.e., version 1.7.0 for iOS. Here are the release notes from Niantic for the update:
In the blog post Niantic also said that it is continuing to eliminate “bots and scrapers” from Pokémon Go, adding that jailbroken devices “are not supported by Pokémon Go,” meaning that, effectively, the new update has removed support for jailbroken devices.
- Implemented Buddy Pokémon: Trainers will now be able to choose one of their Pokémon to be their buddy. A Trainer can earn Candy for their Buddy Pokémon by walking a certain distance.
- Made it easier to select smaller Pokémon on the screen.
- Fixed an issue where Eggs would sometimes hatch without displaying the animation.
- Improved performance reliability when a device switches networks to no longer cause the application to hang or stop updating.
- Pokémon Go Plus support.
- Minor text fixes.
Niantic does not mention a date for the update, but expect it imminently
Source: Niantic Labs - Pokémon GO