Here are the "major changes to regulations" listed by the Cochise County Planning Department in its Jan 9, 2013, slide show to the County Planning & Zoning Commission.  At that meeting, the Commission decided to have work sessions -- which is to say, discussions without voting -- about the many proposed changes, before voting on them.  One major oddity in the slide show is that it does not mention the drastic changes in water regulations, in section 1819/1820.