Rawhide schedule changes - info for testers

[Bruno Wolff III]

On Wed, Nov 14, 2007 at 12:08:08 -0500,
  Will Woods <wwoods at redhat.com> wrote:
> 
> The Preview Release snapshot comes two weeks before the final release.
> This lines up with the final development freeze. It represents the first
> attempt at producing a Release Candidate[2].
> 
> As we approach the final release, Release Candidate images will probably
> be made available for testing, like we did with Fedora 8.
> 
> If you want more details, check the links above. If you've got any
> questions or concerns, please speak up soon.

At what point does the key the rpms are signed with change from the
rawhide key to the fedora key?