Sony officially states that PlayStation 4 will not have DRM against used games

[binary solo]

My pledge on DRM:

I will buy most of my DRM-free games new (but probably not at launch price). But I won't buy DRM-free games unless I actually want the game. By not implementing DRM I'm assuming the publisher supports the used game market and thus there isn't any sense of betrayal if I buy some used games. I will only buy used games if the data shows the game has likely had profitable sales. When I buy a DRM-free game, even though I won't buy at launch price unless it's a must have game, I will buy at a price that is > 1/2 the launch price.

I won't buy DRM games that I would probably like, which I probably would buy if the game was DRM-free . I will buy DRM games that I know I will love. But I won't buy any DRM games until they are at least 1/2 the launch price. Depending on how much DRM costs I might buy some DRM games used.

As I rarely play multiplayer, if a game has multiplayer online pass only I will put that game into the DRM-free category, but it's also likely to be a game I buy used.

If almost every publisher implements DRM then it will be a very slow start to the generation for me. But I'm OK with that, PS3 will see me right for quite a while.