It's coming!! What are your plans? Here's mine:
I live in a country which has very strict gun laws. So what I plan to do is 'acquire' an angle grinder and generator from the local Home Depot, and, whilst fighting off hordes of Zombies I'll make my way to the sportsman's warehouse store.
Once there I will use my grinder and generator to hack through the racks holding the guns in place, grab a shit ton of ammo and go hole up *somewhere* I haven't figured that out yet.
I am guessing the Zombies will be like in the game Left 4 Dead 2, some fast, some slow, other's gigantic, fat and gross.