Microsoft wants developers to build apps for the Universal Windows Platform (UWP), the set of APIs and frameworks that allows developers to build applications that are substantially compatible with desktop PCs, tablets, smartphones, Xbox One, HoloLens, and soon, a range of affordable virtual reality headsets.

The company’s annual Build developer conference is taking place in May, which means that it’s going to come after the expected release date of next major Windows update, the Creators Update. But there’s new developer content in the Creators Update, so instead of having a big conference to talk about that, Microsoft has had a “Windows Developer Day” streaming session to talk about some of the new things coming in the Creators Update for developers. At Build, the company will be talking about what’s coming after the Creators Update, looking forward at the next year or so of Windows development.

For the Creators Update today, Microsoft has announced that the current preview SDK is feature complete, meaning that developers can use it to get complete access to every feature that’ll be coming in the update when it ships.