I wonder if anyone else will be forced to wait on https://scottaaronson.blog/ to tell us if this is significant.
He's already blogged about it a bit here
https://scottaaronson.blog/?p=8310#comments
and here
https://scottaaronson.blog/?p=8329
though I bet he will have more to say now that the paper is officially out.
I was about to add a similar comment. Definitely interested to read his evaluation and whether there is more hype than substance here, though I'm guessing it may take some time.
He told when the preprint was published
https://scottaaronson.blog/?p=8310