Ballmer previews Windows 7 Summary: At the Consumer Electronics Show in Las Vegas, Microsoft CEO Steve Ballmer opens the show with a look at the future of entertainment. He also previews the next Windows operating system, Windows 7. January 8, 2009 -- 08:06 GMT (00:06 PST) Loading... Please wait. Topic: Microsoft Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.