Complex sentence: Little was known about the scrapping of the refurbishment idea until a large media announcement on the park's website on 17 December 2013 which included some information about Scorpion Express such as the ride's theme and slogan.
Split into simpler sentences: Little was known about the scrapping of the refurbishment idea until a large media announcement on the park's website on 17 December 2013. Which included some information about Scorpion Express such as the ride's theme and slogan.