Niantic recently rolled out several adjustments in Pokémon GO. They are already live.
Zygarde Cells on Routes: a Cell found on a Route is now given as a reward when you complete the Route. You no longer need to collect it from the map. The odds of finding one stay the same, so not every Route has one.
Compass and weather: the two icons are now a single icon. The Compass shows while you rotate or zoom the view, the Weather icon the rest of the time. Tap the Weather icon to see active conditions and boosts.
★ 100% Pokémon: the game asks you to confirm before you transfer a Pokémon with maxed-out stats. During bulk transfers, it shows how many ★ 100% Pokémon you selected.
Clearer map: wild Pokémon, Gyms, Power Spots and PokéStops overlap less. It is easier to tap the encounter you want.
Community Ambassador meetups: you can check in from the in-game map (Nearby menu, purple Meetup pin, Check In). Check-in opens 15 minutes before the meetup starts.
Full details in the official announcement.