Duplo Dino Coaster isn't the only new attraction for 2020 at Legoland Windsor Resort. Atlantis Submarine Voyage is currently undergoing a major refurbishment. Being rethemed into a clone of an attraction in Legoland California called Lego City Deep Sea Adventure, a newer version of the old Atlantis story.
The outside has been completely stripped back to the basics, all of the old models, signs and theming for Atlantis has been removed, ready for new facades and theming to be installed. Nothing has been confirmed by the park yet, apart from new banners being installed on construction fences around the attraction. The area is currently visible by the Haunted House Monster Partyqueue line and the Castle Hotel plaza.