Lots has happened in the past few days:
Sony announced that it is halting further use of rootkit-based copy protection. Numerous outlets reported that Sony has thrown in the towel on its current first4internet-based CD copy protection. This article from the Boston Globe is typical of the news coverage.
A number of lawsuits in Europe and the US have been filed. Information Week has an article describing the US class action suit.
The rootkit reportedly is spyware; it reports user's listening habits. So says Computer Associates.
And virus writers are exploiting the Sony DRM for Windows technology, this according to multiple articles including this one from the BBC.
Microsoft offers to remove the Sony rootkit spyware.