Q: What about XBlocks?
XBlocks developed within edX are subject to the flow described at the start of this page.
XBlocks contributed by other development teams are assessed by a product manager and a level of support (full, conditional, or no edX support) is determined. If necessary, XBlocks that are identified as having full support can be released without documentation (and with conditional support only) until documentation is complete. This might occur if team priorities require a different release schedule for the software and the documentation.