I'll have to disagree with the people who are spreading the rumors and agree with the devs. I was at GamesWeek in Italy last week as press and I had an appointment with Sony at 5.30pm the second day of the show. In a small room they had set up a ps4 for the press to try. It was running since 8.30 am of the same day and every major press and news outlet got to try it. They did not turn it off once! When I asked the woman that was giving me and my associate details, whether they noticed any heating rumors she told me that they just received these PS4s for the show and did not have time to test them in the office, she did however say they were the final hardware with only modified software that required a check in with a server every day for internal security reasons. She told me that I could go ahead see for my self whether it was hot or not. I swear to God I checked everywhere I even lifted the damn thing, it was not hot. I repeat the system was running all day long just like the rest of them that where there for the attendees to try. The Xbox One, on the other hand, was overheating a lot and from what I was told by the "Microsoft Tech Gurus" the demo units on display were not even the overclocked versions.