Norton Lincese Questions

Hi,

 

I'm not sure about some details for Norton's products.

 

If I purchase "NIS 2012, 3 years, will I be able to use the latest version(upgraded versions) of NIS(such as NIS 2013, 2014..)

 

I already have NU v15, do I need to buy an upgrade version if Windows 8 it released?

 

And if I purchase "Norton Internet Security 5 for Mac", do I need to buy the software if "OS X Mountain Lion(v.10.8.0)" is released(this summer)? Can I use the Norton Internet Security 5 for Mac on Mountain Lion?

 

If I purchase "Norton One", can I upgrade or update the software, or I will need to buy it again(no matter same or different softwares)

 

Thanks.