DSM-5 (also known as the DSM-V) is the planned fifth edition of the American Psychiatric Association's (APA) Diagnostic and Statistical Manual of Mental Disorders.
It is due for publication in May 2013 and will supersede the DSM-IV which was last revised in 2000. APA has an official development website for posting of draft versions of the DSM-5.
Read more about DSM-5: Development, First Draft Diagnostic Criteria, Proposed New Diagnoses, Conditions Proposed By Outside Sources, Criticism