A new job listing over at Microsoft has revealed when the outfit is planning to serve up the next iteration of its smartphone OS. According to the post, work on the current version is being finished up and they're "getting ready for our next release targeting the holiday of this year." Presumably, the update will be part of the wider Blue umbrella of tweaks for Windows. Though a vague "next release" doesn't offer any details in terms of features, it's likely the OS will carry a significant set of changes as the team in need of a developer is responsible for the Start screen experience, the shell, first party apps and more.