NGC made the announcement first on April 17, 2008 when they confirmed the existence of the variety in this news release. According to the release, NGC will automatically assign the designation “Reverse of 2007” when applicable for any 2008-W Silver Eagles submitted. There is no additional fee necessary to receive the designation.
PCGS gave official confirmation yesterday April 29, 2008 in this release. PCGS will attribute coins with “Reverse of 2007.” However, in order to receive the attribution, coins must be submitted under the “Variety Attribution Program” at an additional $20 fee.
So far, most encapsulated examples of the new variety offered for sale have been graded by NGC. This is likely due to the fact that they got off to a much earlier start recognizing and setting submission policies for the coins. They are also providing the attribution for no additional fees, which I think will keep most submissions flowing their way. PCGS’s additional fee of $20 seems excessive, especially for a variety with such clear diagnostics.