Pulling another page from Apple's playbook, Microsoft has sent out a cryptic invitation to lure reporters to an upcoming event, while offering almost no clue as to what will be introduced.
In this case, Microsoft has invited select reporters to an event on April 12 in San Francisco. Engadget appears to be first along the mail truck route from Redmond, Wash., so for now you will have to go there to see pictures of said invitation.
Microsoft is declining to comment, though I'd bet it has something to do with the mobile front. One possibility is the introduction of a Microsoft-designed consumer phone, which is on track to come out this year, ahead of the first Windows Phone 7 devices from other makers.