I guess that's true, so i'll be explicit about that too:
These Google developers are working on Swift because they are part of a team that supports internal-facing IOS tooling.
(there really is nothing down this rabbit hole, FWIW)
(there really is nothing down this rabbit hole, FWIW)
If we were trying to keep something major under wraps, this would be an exceptionally bad way of achieving that.
The public docs we have even show that we discourage private github repos for various reasons. Our general internal answer would be "don't stage it on github at all unless you are willing to see it leak"