Don't know the answer to your question though the DSM-V isn't going to come out for quite a few years. I'm sure it will include some of the latest cutting edge data.
I'm not hearing much about the DSM-V other than a few tidbits in the medical journals.
http://www.dsm5.org/
I attending an excellent grand rounds @ Columbia a few months back where the lecturer mentioned that PTSD was only manifested if the person had a specific set of genes. Very interesting-and could lead to some good clinical applications. During the grand rounds, the lecturer even commented to the attendings working on DSM-V and said something to the effect of "something to consider before you come out with the next DSM".
There's a good psychiatric movie on the Sundance Channel once in awhile called Whole
http://www.imdb.com/title/tt0429245/
The movie has Michael First, M.D., one of the docs heading the new DSM-V. It includes a disorder where people are obsessed with becoming an amputee which supposedly has hundreds of people around the world with this disorder. First was interviewed in the movie because he doesn't know to include this in the upcoming DSM. This disorder only came to his attention because of internet groups on the subject started drawing people in. Up until that point, all the people who had it thought they were the only ones to have it. Once an internet forum on it starting gaining enough members, certain commonalities between the people were noticed...
e.g.
they usually wanted their left lower leg amputated
they usually knew exactly where they wanted the amputation and what part of the limb to keep
they felt as if the limb they wanted amputated didn't belong to them
Something the movie didn't explore was the neurological work up that was done. Unfortunate, but remember this movie is for the masses, not for doctors. I kept thinking maybe these people had some type of neurological insult to them and if this insult could be isolated. I kept thinking that perhaps this disorder was neurologic, not psychiatric. However given that First is quite brilliant, I'm sure he's already investigated that area.
Just remembered there's another thread asking for controversial topics already "Hot Topics in Psychiatry"