The applications - Norton Internet Security 2008 and Norton AntiVirus 2008 - are now available for beta test on the Symantec site.
A key new feature in both packages is Symantec Online Network for Advanced Response or SONAR for short.
According to press reports, SONAR adds behaviour analysis protection to users' PCs, allowing unknown malware to be locked down before it starts to execute.
Traditional signature-based detection systems, of course, can't cope with unknown malware, although I have my doubts as to whether a behavioural analysis technology is appropriate to a mainstream security product, as there are lots of strange memory interactions that can occur under Vista, for example.
If Symantec's software locks down these interactions, then the PC can freeze. Still, the software is free to beta test - get it here...