From sketch pictures they posted awhile back, yes they plan on a Christmas event at least, not to sure on a Halloween or Turkey Day event, I don't mind loosing out on some events if it means they are working around the clock to get other things accomplished and ingame. Also I think the reason for summer still going was that with all the login restrictions to start and character creation restrictions they just left it going a bit longer, im sure it will be down soon.

FYI the Christmas clothing looked pretty nifty, that's always my favorite ingame event time anyhoo