That’s like a constant advertisement on your desktop or homescreen.
Horizon: Zero Dawn looks like it will be a bigger than normal release for Sony- they really seem to be putting all of their weight behind the title, to ensure it success. The game is not even due out for another year, and we are already getting a heavy push to ensure that the game remains visible at all times.
For example, look at these- these are some awesome, high resolution wallpapers based on the Horizon concept art that Guerrilla Games have pushed out. They have also been good enough to put them out in a variety of sizes (click through the gallery to find a size that works best for your screen), so you should be able to find one that suits your needs.
But this is as good a way to ensure visibility as any- basically, if you do go for one of these wallpapers, you always have an awesome reminder of it on your desktop or your homescreen. That keeps you hyped for it in the run up to the game’s release next year. Clever, Sony, clever.