Microsoft announced last year that it would buy Nokia’s devices and services division, but the deal hasn’t yet closed. Microsoft has provided an update on when that will happen though: “The transaction will be completed this Friday, April 25, when we’ll officially welcome the Nokia Devices and Services business as part of the Microsoft family,” explained general counsel Brad Smith in a blog post yesterday. “This acquisition will help Microsoft accelerate innovation and market adoption for Windows Phones.” Alongside this, a letter from Nokia to its suppliers has leaked out, published by tech blog Nokia Power User. It suggests that Nokia’s handset-making business will change its name to “Microsoft Mobile” once the transaction completes. The music industry will be watching with interest to see what Microsoft does with Nokia’s music activities, including its MixRadio service. Praised for its usability, the service nevertheless mirrors some of the features in Microsoft’s own Xbox Music.