The OpenQuest Third Edition System Resource Document (SRD) is currently in development and will be released a couple of months after the main rulebook. My current eta is the beginning of November/December 2021.
The SRD will contain all the Open Gaming Content in OQ 3 that I will be releasing under the OpenGaming License.
It will be released as a word document and an online version that will be posted here for reference.
For more about the OQ SRD check out this post.