That's gonna be a fourth AR game for Niantic after Ingress, Pokemon Go, and Harry Potter. This time they opened a pre-registration form but the early access will only start in a limited amount of countries as usual. You can sign up over this form as well.
Get ready to ROLL OUT with TRANSFORMERS: Heavy Metal, a new #Transformers experience from @Nianticlabs. Sign up for more info at https://t.co/ZDoVrIc6fn. pic.twitter.com/JbOCiPd8iw
— TRANSFORMERS: Heavy Metal (@TFHeavyMetal) June 14, 2021
In addition, there are two in-game screenshots that were shared as an early preview.

Via Android Police