EU’s newsroom site where various info on & from the Article 20 Working Party.
Currently, the guidelines:
Guidelines on the right to “data portability”, wp242rev.01 pdf
Guidelines on Data Protection Officers (‘DPOs’), wp243rev.01 pdf
Guidelines on The Lead Supervisory Authority, wp244rev.01 pdf
Guidelines on Data Protection Impact Assessment (DPIA) or Privacy Impact Assessment (PIA), wp248_enpdf
More to add…