Brandname lawyer David Boies has framed the hacked Sony email as "stolen property." Bill Hutchinson at the New York Daily News obtained the warning letter Boies sent to media.
Essentially it says that Sony does not approve of the media's use of the emails and requests that they destroy them.
Does that mean that the content of some of the emails will no longer be published? Time will tell. Likely media are consulting with their own in-house counsel and the law firms which represent them.