Sorry; this announcement ended up being a little premature!
The original plan was to migrate the site to a new host, but our current hosts have since quoted us a much better package which will take care of the server issues I've been concerned about, and should make it easier to maintain the site moving on. I'm currently ironing out the specifics with them and I expect we should be able to make this migration without any significant downtime, but I'll keep everyone updated regardless.
The servers have been stable in the meanwhile and I don't anticipate there being any issues until we're ready for the upgrade, but as usual please file a HelpDesk Ticket if you run into any technical problems 🙇 Thanks again for your patience!