User blog comment:Jimeee/Mounted Combat update now available on Xbox 360./@comment-5162134-20120609202338/@comment-98.86.97.49-20120610141346

There will be craftable cross bows. Source: http://www.pcgamer.com/2012/06/08/dawnguard-video-interview-talks-vampire-lords-and-riftens-plastic-surgeon/