There should be no end-user impact resulting from these changes
(though it's conceivable that some people have processes that rely on
the semantics of the .com/.net serial number.) But because these
zones are widely used and closely watched, we want to let the Internet
community know about the changes in advance.
I didn't notice anybody saying "thank you for doing the right thing by
announcing the change" amongst the flurry of jerking knees. So, thank
you for doing the right thing. Good luck with the maintenance.