I really hope they release this soon and that it’s actually good.
The current search sucks ass, you can’t find anything.
I was trying to search for something in the WebKit source the other day and I had to use Sourcegraph because the GitHub search gave me zero results.
You can try it right now in our beta. Right now, we are onboarding all signups daily. Sign up here: https://github.com/features/code-search
Obvious disclaimer because I work on this (and I also worked on the legacy search): It is way better.