Up to Date ,<> Update Now Meaning

My main panel reads Up to Date <> Update  Now.   My question is the Update Now a command, meaning I must Update Now or simple meaning I can use the at my discretion to update if I choose  to?   Using  chat support two  agents told me I must reinstall and one phone agent said every thing is fine and disregard Update Now.  I installed 7/7/2018 and posed the questions to support on 7/8/2018.  Your answer will be much appreciated.