Rumor: Sony had a DRM system for the PS4, but it's now on hold

[Conegamer]

Well, it's on hold so it could easily be implemented, and likely will for certain 3rd-parties to keep them on side. It's a pretty sad state of affairs that companies need to do this (if it is indeed the case) to keep the 3rd Party support, but, well, that's the industry as it is at the moment.