Legoland Windsor has been given permission to go ahead with a planned £95 million expansion over the next decade that would add at least three major new attractions to the theme park as well as a resort expansion. The rides in question mentioned a new 13 meter tall indoor ride (likely the and two new outdoot "fairground style" rides. Previously the park had applied to build Ghost: The Haunted House, an indoor walk-through haunt that ends with a family friendly indoor drop / bounce tower ride, but I had heard elsewhere that was no longer the plan.
According to a post earlier this year at ThemeParks-UK, the "Haunted House" ride concept had changed from the drop tower one to a new Vekoma MadHouse style that would be called The Haunted House - Monster Party, which is said to be planned for 2019.