Article 29 Data Protection Working Party 29 published the Guidelines on Data Protection Officers (“DPO”).
These are the first of four guidelines provided for by GDPR.
Full document at this address:
http://ec.europa.eu/information_society/newsroom/image/document/2016-51/wp243_en_40855.pdf
Document concerns cases where DPO is compulsory, the position of DPO and its purposes.