The New Fedora Signing Key
The Fedora Project recently re-signed all of its packages with a new key. The story regarding the key can be found here. Contact the release engineering team via IRC in #fedora-devel (irc.freenode.org) or via email to email@example.com for more information.
Enabling the New Signing Key
Users need to accept the new signing key the first time updates are downloaded. PackageKit prompts you whether or not to import the signing key. To accept the key, press y at the prompt.
After the new packages have been released for a period of time (not yet determined), a new package will be released to forcibly remove the old key from the system rpmdb. This ensures the old key is no longer trusted/used by the system.
The plan for implementing the new key is very fluid, and therefore changes can be expected. This page will be updated as new information becomes available.