Well... how to explain this.
I'm 99% sure my region had 212-214 people before update started tonight (I remember trying to get 215) ... but I was gone until after update... and when I got back we had only 207 people... and only one nation had been refounded during that time and no one CTEd.
I talked to another founder and he said he may have seen something quirky too (relating to population drops).
I know this is not very helpful... but just checking to see if anyone else has seen anything. I'll watch and see (and let you know) if anything weird continues.
EDIT: then again I may just be crazy and was day dreaming about having more people
but I don't think so...