I don't recall if this may have been posted in another thread, but I was fooling around with the official site and they have dates and names now of a few of the upcoming events.
7/8-8/31 in TDL is something called "Midsummer Nights Panic"
The other summer events are the same as last year Cool Service, Bon Fire Dance, Cool the Heat, etc
9/9-10/31 is "Disney's Halloween" at both parks
11/8-12/25 TDL has the usual "Christmas Fantasy", but TDS now has a new promotion called "Christmas Wishes"
So I guess Harborside Christmas is gone along with Candlelight Reflections
I don't know when the site was updated, but I just found out about it today.
I can't wait to hear more about them.