Didn't another article mention that Buzz would also be going for the Marvel area? Maybe i'm reading too much into the last concept art with the shooting ant man ride but I wonder if they would just retheme Buzz for a Marvel ride than remove it. Would mean an easy conversion for some of the other parks down the line if the reaction goes well.
^ The concept art does give off a Aquatopia vibe almost but I wouldn't be too surprised if it was artistic liberties and turned out to be similar to Mater's Junkyard Jamboree, but it could go either way.
Edit: It was in the article linked under the concept art:
Starting in 2018, a new Marvel-themed ride (taking the spot of a Buzz Lightyear attraction)