NIS 2010 pop up wanting me to install NIS 2011

I assume this is a product update and will not affect my current subscription with remaining days of 2010? Should I just let NIS 2011 install over NIS 2010 or will NIS 2010 be automatically removed during the NIS 2011 installation process? Any help, suggestions or ideas will be appreciated, thanks!!!

 

I just want to do this the right way and not end up having problems!