If that’s the case, however, it means somebody borrowed the working title naming scheme that previous Spider-Man movies have used.
Spider-Man: Far From Home previously used a Seinfeld reference as its working title, calling itself Fall of George, a reference to the Seinfeld episode “Summer of George.”
Of course, it’s possible there was some sort of miscommunication someplace and Serenity Now actually isn’t referring to the next Spider-Man movie but something else entirely.