Holiday World will announce a 22-million dollar expansion on Thursday. The southern Indiana theme park has been teasing patrons with a website giving clues about the park’s plans for 2015 and a construction cam showing the size of the project which is already underway. On Thursday evening, plans will be revealed live to the media and park guests from a stage constructed at Hyena Falls, followed by fireworks. Fans will be able to stream the announcement live at HolidayWorld.com from around the world. The $22 million investment is more than twice the amount spent before on any single ride in the park's 68-year history.