Is that a new version that isn’t in use anywhere yet? Because for me reCaptcha is still a tool that analyses how much they know about you and if you dgaf about privacy, it lets you through.
But yeah, it's probably not common for sites to 'upgrade' to v3. Recaptchas are a feature you begrudgingly add and v3 puts the onus on the product to decided what to do when there's a low score, so its pretty different.