Is this thing on?
The current status is: https://fedorahosted.org/mailman/listinfo/volume_key contains an implementation of the stand-alone parts of disk encryption key escrow (no IPA or installer integration), based on the plan at https://fedoraproject.org/wiki/Disk_encryption_key_escrow_use_cases .
There is no official release (and no Fedora package) yet because the code depends on cryptsetup extensions that were not accepted upstream. If upstream doesn't respond, I'll probably just bundle the modified libcryptsetup into the volume_key RPM package and link it statically.
For now, you can get the cryptsetup patch from https://fedorahosted.org/releases/v/o/volume_key/cryptsetup-svn-r49.patch , and a preliminary tarball from https://fedorahosted.org/released/volume_key/volume_key-0.1.tar.bz2 . Mirek