Sony has revealed that there is to be a Horizon Zero Dawn: Complete Edition, and that it will be launching on December 6th. This edition of the game will include both the base game as well as The Frozen Wilds expansion, which was revealed by Guerrilla Games earlier this year. If you already have the base game The Frozen Wilds will be out on November 7th, and can be pre-ordered £15.99/£14.39 for Plus members.
The artwork for the game cover is below.
Source: Twitter

JR.
Game of the generation for me (so far).
TSBonyman
I still haven’t gotten around to this yet but it’ll definitely be worth the wait now.
double-o-dave
Mate… it is AWESOME!
ron_mcphatty
It really is :) My favourite game on the PS4!
bunimomike
Same here. I still miss playing it but can’t wait for the DLC. Also, a wonderful soundtrack. I listen to it at least a few times a week even now!
The Lone Steven
Whilst it is a bit generic(in terms of style), it is a lovely piece of cover art and would make for a decent wallpaper. Unlike, Fallout 4’s complete edition. What the heck are you trying to do, Fallout 4? That’s how not to do cover art. Horizon Dawn is how you make it appealing.
Should be £20 by the time i have the means to get and play it. Ah, the benefits of not having the cash or means is starting to turn in my favour. :D What? A lot of stuff is cheap.