Does an unused license expire?

Hi,

 

I use NIS2010 and I purchased a 3 PC version for my parents only to find they had done the same. Rather than mess around sending the version I have back I thought I may as well keep it and activate it once my current license expires, but that's not until 31st December this year.

 

I assume that there will be no problem holding onto it and activating at that time?

 

Also we seem to get a nice free update to the new version each year, so can I assume that once I activate the 2010 license in December, I'll probably be able to update to the 2011 version right away?

 

Many thanks

 

Andrew