Yesterday there was a "quiet" bump of ati-drivers-14.4 to rev2 due to a bug related the release of Witcher 2 game. The filename of package available for download changed to amd-catalyst-14-4-rev2-linux-x86-x86-64-may6.zip and amd-catalyst-14-4-linux-x86-x86-64.zip is not available on the webpage. Since the ebuild is fetch restricted, it is necessary to bump the ebuild to reflect that change. Also installer is now fglrx-14.10.1006.1001/amd-driver-installer-14.10.1006.1001-x86.x86_64.run
I'm assuming that firstname.lastname@example.org equals email@example.com (which is what metadata.xml says).
fetch restriction has been removed, file is hosted on Gentoo mirrors for now.
That's only half of the resolution since you kept in portage a broken driver ATI has decided to withdraw. Proper bump of ebuild to the current version is still required.
I also don't agree with the part of changed description that it was Manifest which was broken - whole ebuild was broken :)
The ati-drivers ebuild is proxy maintained. After the proxy maintainer uploads a new version to the x11 overlay, we will commit it to portage.