Pokemon Go Legendary Shadow Pokemon as Giovanni Lineup

Trainers, Legendary Shadow Pokemon are coming to Pokemon Go as revealed on Pokemon Go’s Team Go Rocket video.
In the video, you can clearly see Team Go Rocket Leaders and their 3rd Pokemon and at the end of the video, you can see Team Go Rocket Leader Giovanni and his lineup of Legendary Shadow Pokemon, Moltres, Zapdos and Articuno.
This confirms that the Legendary Shadow Birds will make their debut, most probably we will battle them as part of the Looming in Shadows Special Research stage 6/6, and that’s when we will see Giovanni.
Complete Special Research to battle Giovanni — By battling Team GO Rocket Grunts, defeating Team GO Rocket Leaders, and proving you’re an accomplished Trainer, you’ll be able to complete research to receive a Super Rocket Radar from Professor Willow. The Super Rocket Radar will help you locate Giovanni! But watch out—some Grunts have figured out what we’re up to. They may pretend to be Giovanni and get in your way! But keep at it, because if you defeat Giovanni, you may be able to rescue Legendary Shadow Pokemon.
More info to follow soon. Stay tuned!