Longhorn,” the next major version of Windows, which has already had its release slip from 2004 to 2005, will likely be pushed back even later, according to eWeek. Microsoft executives are now declining to say when they expect the software to ship. “We do not yet know the time frame for Longhorn, but it will involve a lot of innovative and exciting work,” said Microsoft Chairman and Chief Software Architect Bill Gates at a company financial analyst meeting.