In fact, I noticed the first shift at least 20 years before the government confessed to it and 10 before the Arbor Day Foundation updated theirs. Yes, it's disconcerting.

There are animated maps that will show the shift. It's jarring to watch, so make sure you do it when you're calm and don't have obligations shortly.

This page will let you search by zip code or zoom in on your state:
https://planthardiness.ars.usda.gov/