Actually, there was plenty of advance warning that this was going to be a major update that will break older ad-ons. It was mentioned multiple times in NVAccess news letters and on mailing lists and on the official add-on community website that also
$1. Finally, even if you didn't read any of those, when you ran the update it came up with a dialog warning you about this, giving you an option to see which of your ad-ons would be disabled with an option to abort the installation.
For the specific ad-ons you mentioned, NVDA remote will be getting an update soon, as it says on the page, and you can already
$1. For Eloquence, the official Code Factory add-on also has already been updated. If you were using a different, less official Eloquence, suffice it to say that people have also already put in work to make compatible versions if you know where to look.