Following the announcement of Sony's PlayStation 4 this month, more details are beginning to unfold before the console's launch at the end of the year. The latest reveal is that every PlayStation 4 game will be available to download. 

"PS4 will be similar to PS Vita in that every game will be available as a digital download, and some will also be available as a disc," said Shuhei Yoshida, Sony Worldwide Studios boss, in an interview with The Guardian.

Some games won't be available by way of disk, which is a step-away from what gamers are used to.

According to Yoshida, The Witness will be a digital release because of "the flexibility of the digital distribution scheme". Yoshida explained: "We can have more small games that might be free or available for a couple of dollars, or different services like free-to-play or subscription models" 

"The Sony boss also hinted at a subscription service for games in the interview, a long-awaited feature in the gaming industry. 

"As more and more services and contents become available digitally, we'll have more of an option to create attractive packages," said Yoshida. "So hypothetically we can look at different models – like a cable TV company. We could have gold, silver or platinum levels of membership, something like that

"We can do subscription services when we have more content – especially now that we have the Gaikai technology available. With one subscription you have access to thousands of games – that's our dream."

READ: PS4: Everything you need to know

Gaikai is playing a major role in Sony's next-generation console. It brings several social features including the ability to share games with friends, streaming videos with friends, and talking about games over Facebook and Twitter.

The Sony-owned service will also make PS3 games available for download, so we assume the same technology will be used for the newer titles. 

Sony is expected to reveal more at the E3 tradeshow this summer.