The pages that have new micro heroes are:

AVENGERS - Iron Man, Ant Man, Wasp, The Hulk, The Vision, Scarlet Witch and Quicksilver

FANTASTIC FOUR - Mr. Fantastic, Invisible Woman, Human Torch and The Thing in Alex Ross' Reboot Costumes and Back in Blue Costumes

FLAMENGO - Uniforms from 2013 to 2021

HULK - Dr. Banner, Avenger's Hulk and Savage Hulk

SPIDERVERSE - Alex Ross Costume Concept