From all reports Microsoft has
upgraded the Xbox 360 consoles coming from their factories, and modified the consoles heading back to consumers from service calls. The trouble is,
they're having a hard time admitting it. The company has always maintained there aren't any excessive heat problems with their console, so admitting now that they've added extra heatsink capabilities would be ... somewhat embarrassing. Dean Takahashi at the San Jose Merc has an interview with Todd Holmdahl, the 'hardware guy' at Microsoft:
"We're very proud of the box. We think the vast majority of people are having just a great experience. You look at the number of games they are buying, the number of accessories they are buying, the Live attach. They love the box. They continue to buy the box. That said, we take any customer issue very seriously. We continue to look into these things very deeply. You have seen we have made some changes to our customer service policy."