Yes!! Reading all these posts the past few days about people wondering why they word it like this i just had to post.
It is a trademark, it is meant to keep others from using your IP (this includes name, icons etc). If they do not mention portable devices someone else might make an iOS or Android app and call it Warlords of Dreanor or Warlords of Draenor manual, like we see with so many IP's.
Now keep in mind that we will be seeing this happening more often in the future now that portable devices have become this popular.
It seems as if people think that the trademark is something that Blizzard needs to file in order to release a product, this of course is not the case, they can release manuals without including it in the trademark.