I don't see that a date has been set yet for 2015, but the website is here: http://endracing.com/end-wet and the facebook page is here: www.facebook.com/.../.
It's a fantastic event - very well organized and a lot of fun. Definitely put this one on your swimming list!
Date for 2015 is Saturday, June 20th. Registration opened on Jan 2nd, we have a bunch of people signed up already and the race is capped at 40 solo swimmers. From everything we've heard, this swim is a great value--36 miles and we'll provide a support canoe (and paddler) for only $100 on top of registration if you need it.