Possible reason as to why there won't be a P&R presentation?:
From Alain Littaye at Disney and More;
"Well, from what i've been told the Avatar project is not yet finalized and any designs about it are so classified that no Imagineer not working on the project is allowed in the Avatar design room, the Star Wars land project is not ready yet to be presented as well as anything about Shanghaî Disneyland until everything about SDL will be approved by the Chinese as Disney is afraid that any bad comments could make the Chinese asking for major changes in the project. With the impossibility to announce or release more info on these three major projects, there was not a lot of major things to be announced (at least for the U.S. Parks as the Ratatouille ride/area already officially announced is for Disneyland Paris)."
http://disneyandmore.blogspot.com/2013/06/d23-expo-parks-and-resorts-presentation.html
Any truth to this?