Newsweek on Monday will unveil a sweeping redesign of the magazine and its Web site while at the same time formally ending its seven-year distribution agreement with MSNBC.com. While some recent redesigns have been introduced with fanfare, such as BusinessWeek, whose new look hit newsstands yesterday, or Time, which was overhauled in March, Newsweek Editor Jon Meacham has consciously avoided publicizing Newsweek's revamping. "It was stealth redesign," Meacham said yesterday as he was getting ready to ship the first of the new-look pages to the printer.