8w ago - Not long since the last update, today a Japanese PS4 FAQ warns of possible region-locked games, however, Sony's Shuhei Yoshida says the PlayStation 4 console is still region-free.
To quote from DualShockers.com (linked above): "With the opening of the preorders of the PS4 (that went sold out almost instantly) in Japan, Sony Released a new official FAQ to explain the consoles most relevant ins and outs, and there’s one point that got a few gamers worried about the possibility of not being able to play games from regions different from their console.
Q: Can I use in Japan the game titles and PS4 console released overseas? Conversely, can PS4 titles sold in Japan be used in foreign countries?
A: From the view point of each region’s safety standards and to guarantee operation, please purchase the PS4 console and the games that are sold in your area. There’s the possibility that the titles of some software developers could be region locked. In addition to that, you may no longer eligible for support if you use a an overseas model of the PS4 in Japan.