Did Microsoft see its newest Surface devices leak in all their incrementally-increased glory, and decide that it was time to set a date? Or was the event coming all along and the leak was just happenstance? The world may never know…not that it’s all that important. After a pretty sizeable leak earlier this week, Microsoft has confirmed that a new “Digital event” will take place on March 21st. “Advancing the new era of work with Copilot,” says the headline for the announcement page. It follows with “Tune in here for the latest in scaling AI in your environment with Copilot, Windows, and Surface…