During a Build event in Barcelona, Spain Microsoft teased a slide to the audience featuring a "Project Europe". Just what this project is remains a mystery, but speculation is already under way as to what Microsoft could be cooking up in the kitchen.

Microsoft involved the audience by asking those who attended whether the project is related to "expansion plans for Azure in datacenters" or a "secret Project UWP." The second answer was the correct one, meaning Microsoft is working on something related to its Universal Windows Platform, but again exact details remain surrounded by shadow.