03/18/2010 05:12 am ET | Updated May 25, 2011

Microsoft Courier Release? Microsoft, HP To Unveil Tablet Device

It could be one of Steve Ballmer's riskiest trade show moves in years.

On Wednesday, Mr. Ballmer, Microsoft's chief executive, will unveil a novel take on a slate-type computer during his evening keynote at the Consumer Electronics Show in Las Vegas, according to people familiar with Microsoft's plans. The slate will be made by Hewlett-Packard and possibly available by mid-year, these people said.