According to the latest update posted to BlooLoop, Liseberg will start construction later this month on their new expansion that will add a waterpark, a new hotel and even more parking. While the parking expansion should be done by 2019, the new hotel and waterpark aren't expected to open until sometime between 2021 and 2023. The waterpark, which will mostly be indoors, will be open to anyone who wants to buy a ticket, and not just guests staying and the connected resort hotel. The nice thing is that this will bring year-round business to Liseberg.