We at 1989 Games want to cellebrate this decision by Hazbro and Wizards of the Coast (WotC). Many were skeptical, including us, that WotC would not do the right thing, but they listened to the overwhelming voice of the community.
What a wonderful sight, we’ll be happy to include this attribution in any of our content which includes material from the SRD for 5.1:
This work includes material taken from the System Reference Document 5.1 (“SRD 5.1”) by Wizards of the Coast LLC and available at https://dnd.wizards.com/resources/systems-reference-document. The SRD 5.1 is licensed under the Creative Commons Attribution 4.0 International License available at https://creativecommons.org/licenses/by/4.0/legalcode.
Looking to the future, we hope we can start to develop new SRDs in a community-driven approach much like open source. We’d love to see this SRD put on GitHub (or similar) with the community as the custodian of future versions of the rules. But for now, let’s celebrate this milestone!