We are relicensing all material under the Creative Commons. Details can be found in the PDF above.
Basically, if you check the old Section 15 in any and all OGL products produced by Postmortem Studios, anything we provided as open content is now available under the CC license.
We cannot release other companies’ or individuals’ material (such as OpenD6 etc.) in the same way, but it is our understanding that Section 13 of the original OGL allows sublicenses to continue even after the termination of the original OGL license. Nonetheless, we hope other designers and companies will follow suit and shift to CC licensing.
The only way in which Wizards of the Coast/Hasbro could regain the confidence of the TTRPG community at this point, would be to revise the 1.0a Open Gaming License to include the word ‘Irrevocable’, and even in the best case scenario, we do not anticipate this happening.
Please sign the PETITION against the OGL 1.1 changes, and SIGN the open letter.
Postmortem Studios 
Please sign the PETITION https://www.change.org/p/wizards-hasbro-do-not-change-the-ogl-license against the OGL 1.1 changes, and SIGN https://www.opendnd.games/ the open letter.
Done.