All stories from Topolino #3000 (released in 2013) have something to do witht he number 3000. Also, that issue has more pages (almost double) than a normal Topolino issue.
But only this one is by Casty. From the Cover, I would appreciate, that it's this story, but the name is saying different.
For the record, the covers for Mickey Mouse and Uncle Scrooge are the variant covers. The main covers hadn't been posted yet.