It appears so and I see you have helpfully created a package to help out
with that. I'll research how to get our circle builds updated to use the
new keys.

I found a reddit thread you created that is quite helpful as well if anyone
else is in the same boat as me and CIDER:
https://www.reddit.com/r/emacs/comments/bn6k1y/updating_gnu_elpa_keys/

On Wed, Oct 2, 2019 at 8:55 PM Stefan Monnier <monnier@iro.umontreal.ca>
wrote:

> > I've tried to check the normal avenues for status but they are down. I'm
> > confused why https://elpa.gnu.org/packages/ seems to be up but the
> packages
> > are not able to be downloaded. It looks like the tests have been failing
> > due to package resolution for at least 11 days.
>
> 11 days, huh?  Sounds like you're bitten by the change of signing keys.
> If you use Emacs-26.3 the problem should disappear.
> If you use an older Emacs to fetch the packages you need to first update
> the keys or disable signature checking.
>
>
>         Stefan
>
>