Did anyone get a notice about needing to reactivate your Extensions with Extension Manager today?

Yes, you need to reactivate to solve an issue with the SEO Engine on PDPs and PLPs

good to know, it wasn't clear what the related issue was

After the re-activation you should check if the shopping_x.js starts with the following line

function getSearchURLParams(url)

or

var extensions = {};

got it, reactivated and my shopping_2.js starts with

var extensions = {};

for the record if your shopping_x.js already starts with that line should be ok?

Yes, no Suitlet patch or re-activation needed