I am on the Hot Potatoes mailing list and the information has been coming to me from that. Although there is a note about it at the Hot Potatoes website at the University of Victoria. https://hotpot.uvic.ca/
There are some regulars on that list many of whom are involved in beta testing and adapting various hacks that have been developed for HP like the ever so useful Rottmeier hacks. Martin Holmes sent out an email with the list of things they had in mind and a fair bit of progress has been made. The best would be to get in touch with Martin Holmes via the list. The list address is also at the link above.
Thanks for considering the idea regarding time restrictions.
Mel