The end of an era, but the start of a new one.
From 1UP's official announcement:
This morning the 1UP Network, in conjunction with Microsoft, announced that Games for Windows: The Official Magazine will be transitioning from a print publication to an online-exclusive destination here on 1UP.com. The move is being done to help focus our efforts to where PC gamers spend most of their time: on their PCs. Over the next few weeks 1UP will be ramping up its efforts to become the premiere destination for PC gaming content on the web.