Niantic is upgrading the appraisal system. Pokemon Go dual battles until now were about tap & attack. Now with this upgrade, the mechanism is going to be more like fruit ninja. More like Swipe & fight.
This update is bringing a better way to view your in-game stats & new charged attack mechanism, as tweeted by Niantic.
Trainers, two feature revamps are coming to Pokémon GO! We are rolling out an updated appraisal system to give you more detailed information on your Pokémon's stats, and will soon be updating the Charged Attack mechanic in Trainer Battles. Watch for a preview! pic.twitter.com/0MaIjrxx8f
— Niantic Support (@NianticHelp) July 15, 2019
Here is another tweet regarding the stats view.
What may be the greatest QoL update in Pokemon GO history comes in v0.149.0: a majorly revamped in-game appraisal system! Each IV is now visible on 3 progress bars and the stamp turns red for 100% IVs. You can even switch between Pokemon with a single tap for quick comparisons! pic.twitter.com/hZa8VA9XBl
— The Silph Road (@TheSilphRoad) July 15, 2019
This update will be rolled out for all users very soon through your appstore & playstore.