Although you can't actually see the actor's face, the suit in the artwork is clearly the one Peter Parker donned in both Captain America: Civil War and Spider-Man: Homecoming.
"The idea is that Tony Stark has come to the D23 Expo to showcase the global Avengers Initiative, which is the Avengers Campus in Disneyland California and the campus in Disneyland Paris, as well as his partnerships with the Worldwide Engineering Brigade and Pym Technologies," Walt Disney Imagineering Creative Director Caroline May said at D23 Expo. This announcement was also accompanied by concept art of the entire park, including Spider-Man swinging past the New Avengers Facility. However, the above artwork is the first to feature Spidey so prominently since news of the Sony/Marvel split broke.
Avengers Campus arrives in Disney California Adventure in summer 2020, Walt Disney Studios Park in 2021 and Hong Kong Disneyland in 2023. Whether Spider-Man ultimately makes the trip with the rest of the heroes of the Marvel Universe remains to be seen.