It's a little different. You can mark which comment answers a question, and comments can be voted. We will probably find some other things we want Discussions to do differently, too, as we iterate.
Thanks Nat! I would also recommend writing a blog post announcing Discussions and its features as soon as you get the chance.
Reading this HN thread, I got the impression GitHub actually did just copy/paste Issues into a new tab, as a commenter mentioned, a belief that was backed up by a cursory look at Next.js's Discussions.
