I have an X495, which I think is pretty much the same frame size as the newer X700 series, and I had the JD 54" blade and Quickhitch for it.
I also had an older Yanmar CUT, which I traded in on a new JD2520. As part of the deal, I upgraded the Quickhitch from the X495 to fit the new 2520, which uses the same blade. The Quickhitch for the 2520 is "taller", as the front end of the 2520 sits quite a bit higher. As I understand it, the quickhitch itself (for any model) only comes with the lift cylinder to make the blade move up and down. The angling cylinder is an option over and above, because my dealer took the the original angling cylinder off of the X495 hitch and added it to the new Quickhitch which fits the 2520.
REV