What do the iPad "End of Times" books contain?
Games Workshop have replied to my email:


  Thanks for the email.
  
  I can confirm for you that the iBook contains everything that the
  physical copy contains except the paper!
  
  I hope that this helps, but if you need anything further, please let
  me know.
  
  Kind regards
  
  Lydia


It looks like iBook has a complete ruleset too.