A lot of news pointing to a potential new park for Universal in Florida
475 Acres of land was just purchased north of Universal Boulevard as shown on the map above.
Islands of Adventure is approx. 110 Acres and Universal Studios Florida is approx. 125 acres so there is plenty of room for new attractions, parks, hotels etc.
Source: http://thrillgeek.com/2016/02/comcast-confirms-130m-land-acquisition-adjacent-to-an-existing-theme-park/