According to this article, there appears to be a newly discovered threat affecting Windows 7 from USB devices NOT related to autorun or autoplay. This one has to do with viewing .LNK files through the Windows GUI.
The major AV companies already have samples are releasing definitions for the known variants. For example, Symantec detects the malware as W32.Temphid and released that detection on 13 July 2010.
email: david @ sharpesecurity.com