Longhorn, the next major version of Windows for desktop PCs, will debut in 2005 and will usher in a new level of graphics for PCs, Microsoft executives said Wednesday. While Microsoft plans to release "a couple of beta," or test, versions of Longhorn in 2004, the final version of the operating system won't come out commercially until 2005, said Will Poole, senior vice president of the Windows Client division at Microsoft. He made the comments during a speech delivered at the Windows Hardware Engineering Conference (WinHEC) here. Previously, analysts and sources had speculated that Longhorn would come out in late 2004 or early 2005. Read more: CNet News.