(26 Nov 2019) cOAlition S endorse a number of strategies to encourage subscription publishers to transition to Open Access. These approaches are referred to as ’transformative arrangements’ and include transformative agreements, transformative model agreements and transformative journals.
The Guidance on the Implementation of Plan S indicates an ambition of developing a framework for ‘transformative journals’. Such ‘transformative journals’ are journals that (i) gradually increase the share of Open Access content, (ii) offset subscription income from payments for publishing services (to avoid double payments), and (iii) have a clear commitment to a transition to full and immediate Open Access for all peer-reviewed scholarly articles within an agreed timeframe.
Details of the requirements constitute this framework, see here.