Google seems to have recently made the new GoogleBot user agent name that is dynamic for the evergreen GoogleBot live. Bastian Grimm said on Twitter he started noticing the new name on January 12, 2020.

Google’s Martin Splitt said a month ago that the experiment was live, to test the new user agent name in the wild. Google did warn us in October about this user agent name change and then started testing it in December. I would think by now it should be live.

Here is a screen shot from Bastian of the new useragent he found in his log files:

What do you see?

I still do see the old GoogleBot, so it might not be fully live. I also see Google testing Chrome 79:

But I am mostly seeing Chrome 41, the old user agent like 95% of the time:

Forum discussion at Twitter.