As Brian mentioned, not this year. And to add to that, the first Marathon of Mayhem debuted a year after the previous fountain show debuted. And with the newest version having a different fountain layout and everything, it makes perfect sense they'd focus on getting that up and running before working on a show for HHN, and they also had to deal with a new parade on top of that!
Come next year, hopefully rumors of a new HHN lagoon show will resurface.
Honestly, that Summer Camp Dog doesn't even register as a blip on the culinarily alarms like those previous two items did. All of those toppings (even in combination) aren't new nor wildly foreign to hot dogs. And admittedly, I really don't see anything that comes close to those previous items. Maybe the Frozen Death Chill, but that's more due to it looking visually un-appealing.