I really detest Windows 10 along with Windows 7 - but with the world crashing down with Microsoft no longer supporting "7" - what happens if one doesn't change to "10" and will Norton Security still work ? Windows XP was the best & easiest system to work & deal with - and I still have one system on that OS.
If you mean, will Norton still support Windows 7, we can only speculate that Win7 will be supported for the foreseeable future, but in time support may be limited as it is with XP and Vista.