Cope Linder has FINALLY updated their website to say W/Element. The floor count is 58 floors it looks like. There are no new renders yet (still the Waldorf-Astoria design), but it is nice to know they are officially working on it.
http://www.cope-linder.com/index.html
From my calculations, with floor heights of 10 feet and two lobbies, the height will be 634 feet. It could be higher though of course.