Not saying it won't be different in 2017 but I went all the way back to 2013 and Wishes was scheduled at 10pm in June for every one of those years 2013-2016. Maybe because there was a nighttime parade, but there is really is no way of knowing if that was their reason. Could just be the parks are open later so everything is scheduled later. Also, there is definitely a possibility there will be a nighttime parade in June 2017 at WDW.