Wait To Play MGS Ground Zeroes?

For people that are as into the MGS series as I am (beat every single one a bazillion times) and have beaten Ground Zeroes, would you recommend that I wait to play GZ on PS4 a few days before MGS 5: Phantom Pain comes out or just play it now because it doesn't have much to do with Phantom Pain?

It is best that you buy it digitally or rent it from gamefly, because Phantom Pain will not be releasing until as early as 2015 and Ground Zeroes is the only taste that you will get of it until then.

What he said.