Update: Sony has clarified the comments made by Tretton, stating the PS4 is not designed to lock disc-based games.

Original story: Sony may have just shot itself in the foot after revealing DRM on the PlayStation 4 is entirely in the hands of the game publishers.

The platform holder was cheered last night after it appeared to take a huge step into winning over gamers by stating it would not place restrictive DRM on PS4 titles, but it appears this only applies to first-party games.

Quizzed on the matter of DRM by GameTrailers, Sony Computer Entertainment America CEO Jack Tretton said: "We create the platform. We've certainly stated that our first party games are not going to be doing that, but we welcome publishers and their business models to our platform.

"There's going to be free-to-play, there's going to be every potential business model on there. And again that's up to their relationship with the consumer."

Asked again about DRM he added: "We're not going to dictate that. We're going to give them a platform to publish on."

"The DRM decision is going to have to be in the hands of the third parties - that's not something we're going to dictate or control or mandate or implement."

Should third-parties such as EA and Activision opt for strict DRM on its Xbox One titles it may well be the case that the same will apply on PS4. Expect this to rumble on for some time to come.

Source: GameTrailers Live