According to this article from F-Secure, there’s a new version of the Zeus crimeware that’s making the rounds that’s evolved yet again, possibly from the source code for version 2.0.8.9 was leaked. According to the article (and the threat report that it notes as it’s source), this new iteration of the Zeus code makes extensive use of a peer-to-peer network to further complicate tracking down and eliminate.
Article is available here.
Threat report is available here.