Recent article about Plan S (Open Access scientific publishing), in Dutch... (published in Nederlands Tijdschrift voor Natuurkunde) here

Recent book by R.J. Smits on the genesis of Plan S (I was an active participant in the early discussions). It is Open Access:have a look here.
A recent tweet on the subject.

Science Europe Open Access Symposium
Antwerp, April 26, 27, 2017: Programme and closing remarks

A recent initiative on Open Access publishing, SciPost, you find via this link

(Another...) talk on Open Access Publishing (Nijmegen, December 11, 2013)

Another publication on Open Access publishing is here
And here

Once a pioneering initiative originating at CERN (Salvatore Mele, Jens Vigen), now a well established 'player' is SCOAP3 the Sponsoring Consortium for Open Access Publishing in Particle Physics.