We knew it was coming soon and now it is here. Google has just announced that most test tools now support the new evergreen GoogleBot. We've been waiting for this for a few months since Google launched the evergreen GoogleBot for crawling and indexing and now the tools also support this.
Google announced: "Today we have updated most of our test tools to use the evergreen Chromium renderer." The tools that support this include:
Here's an example that Google shared: "Although the previous version of the mobile-friendly test does not display the page content, the new version does."
Google said the test tools show how Googlebot processes your pages as accurately as possible. With the update for the new Googlebot, Google had to update them to use the same renderer as Googlebot.
Forum discussion on twitter.