Update NIS2009 from 16.0.0.125 to 16.1.0.33. The 16.0.0.125 folder is still there, safe to delete?

I just noticed NIS2009 downloading a patch of almost 8MB, after the restart I saw NIS2009 got an upgrade to version v16.1.0.33. In my C:\Program Files\Norton Internet Security\ folder I still see several subfolders of the previous v16.0.0.125 version. Are those safe to delete or are they still needed somehow, because one might think that if they are not needed anymore that the Norton installer would have deleted them...

 

Any chance we might get to see a changelog? :smileywink: