The CAA managed to make a complete mess of the current forms to the extent that they are having to redesign them all. Maybe they are being a little more cautious this time in an attempt to do a better job and prevent the World running out of trees and blue ink. Rumor has it the new forms will be for online completion however; they need to be aware that in many cases the compiler does not have a connection when completing forms.
The instructions have been very poor on the current batch and even the CAAs request for individuals to keep them advised of address changes contained a defunct address for the CAA dept you had to notify!