Working party 29 has published on 15 December 2016 its guidelines and FAQ on

– Right to Data Portability

– Data Protection Officer (DPO)

– Lead Supervisory authority

WP29 welcomes comments on these documents until end of January 2017
http://ec.europa.eu/newsroom/just/item-detail.cfm?item_id=50083
  contact : Stephanie.faber@squirepb.com