Recently, a new update was released for Pokémon GO (only on Android) which came packaged with brand new loading screen art to tie in with the new Snapshot mode!
The IOS version has yet to receive this update but likely will over the next few days.
Check it out below:
Serebii Update: A new version is starting to roll out on Pokémon GO on Android with iOS to come later. This update includes a new load screen to tie in with the upcoming GO Snapshot feature https://t.co/NWlAdn57aQpic.twitter.com/1g4mjd2wmV
— Serebii.net (@SerebiiNet) February 17, 2019
If we have any more information to share we will cover it here at NintendoSoup so stay tuned for more!