Press releases are actually meant to encourage journalists to write news articles on a particular subject. It’s basically a who, what , why, when, and where information piece. There is no requirement (from a journalistic perspective) to use a press release word-for-word, although some affiliate programs might have a preference that you do so. Using nofollow for your link to a news article is of no benefit from a duplicate content perspective, but writing your own unique news article on the subject is certainly beneficial.