You're 100% correct. Only 2016 was ever announced. I'm sure the heads of the project are striving for a certain time of the year, but I bet even THEY don't know when it'll be totally ready/finished by. So it's definitely been assumptions based on the progress so far/previous openings. But I think by Summer 2016 is a valid guess. Have it open in time for the summer crowds.Correct me if I'm wrong, but I'm fairly sure an opening season hasn't been indicated yet. While we've only been told "2016," it's solely an assumption at this point that the land will open within the first half of the year.
Oh my god. I probably won't enjoy the Wizarding World until 2018....