Re: have they sorted out the lack of citrix yet?
No, it's the Citrix Receiver. They canned it and said use the HTML5 version. But you could only get that downloaded and installed if your IT dept had signed up to a certain level of Citrix support; it wasn't a standard client as with windows etc.
A quick Google suggests that they finally saw sense and re-released a native receiver app last August - probably about a week after I gave up on chrome books when I was last looking :
http://techcrunch.com/2014/08/21/google-and-citrix-team-up-to-make-chromebooks-more-attractive-to-businesses/