HELP, how long will a norton systemworks premier 2005 work?

if anyone here works for symantec or knows how to answer this question... please help me out? i thank you in advance.

 

QUESTION:

 

how long will the norton systemworks premier 2005 work? i mean the updates for the antivirus and the other features?

 

is it forever? for as long as i have the pogram the udpates will work? or will symatec one day decide to cancell the updates/support to older versions.