So, I got this tonight,, about 4 hour download time getting it from the Play-station Store.
It was definitely worth the wait. I haven't sat here and said to myself "I love this game" since Black Ops 2, before and after it became backwards compatible.
I'm not sure whether it's the boots on the ground game play, or that there doesn't seem to be a gun too overpowered (as of yet). I'm using the first assault rifle and the PPSH, and I love both of them.
Genuinely a fantastic game so far, going to rank up more tomorrow, then I'll try the campaign to see what that is like.