Hey offliners,
In case you're interested, the Foundation will be working to replace OCG over the coming months. I wanted to make sure you're aware in case you rely on any of this infrastructure and/or have plans for further development dependent on it.
What this means in the short term is that PDF book rendering (through Book Creator) will be shut off for a few months at least while a suitable replacement is researched, tested, and built.
Here's the full write up: https://www.mediawiki.org/wiki/Reading/Web/PDF_Functionality
Let me know if you have any questions or if this has major impact to your work.
Cheers, Anne