Why has there been so much controversy with regard to the new DSM-5? What are the implications of a diagnosis being eliminated? What happens when a new diagnosis is added?

Why has there been so much controversy with regard to the new DSM-5? What are the implications of a diagnosis being eliminated? What happens when a new diagnosis is added? Research at least one of the current controversies and outline the arguments on both sides in a two-page report. Cite your sources.