UPDATE July 9, 2020:
Since an initial 11 signatories were announced in late June – including Cambridge University Press, Elsevier and Oxford University Press – eight further signatories are announced today, including SAGE, eLife and Wiley. This brings the collective number of journals affected to over 7,000 – which will have a global impact on research across many disciplines.
The action-oriented list of commitments has now been signed by (alphabetically): AGU, American Chemical Society Publications, American Mathematical Society Publications, BMJ Journals, Cambridge University Press, the Company of Biologists, eLife, Elsevier, Emerald Publishing, the Geological Society of London, Hindawi, IOP Publishing, NEJM Group, Oxford University Press, the Royal Society, the Royal Society of Chemistry, SAGE Publishing, Ubiquity Press and Wiley.
Full Text via the Royal Society of Publishing: