New
#21
2011 version of both NAV and NIS has already been released
Norton Internet Security 2011 and Norton AntiVirus... - Norton Community
And they do offer free upgrade for existing customers NIS and NAV (2006 and newer)
If you are an existing customer with an active subscription to Norton Internet Security or Norton AntiVirus (2006 or newer), you can update to the latest version for FREE. To do this, simply go to Norton Update Center and select Update Me Now.
If you are still using it I strongly recommend you to upgrade to 2011 version.
Norton Update Center