Weeks before the October Microsoft hardware event, we speculated about a dual-screen Surface device and a Microsoft phone. Now that we know these two devices are, in fact, happening—they’re called Surface Neo and Surface Duo, respectively—we can move on and speculate about something equally important: What’s the developer story? Or, maybe stories, since Neo runs on Windows 10 and Duo runs on Android.

According to the Microsoft officials I conversed with at last week’s events, the software giant will go public with its plans for developers “in the next few weeks.” More formally, Microsoft wrote in its blog post about Windows 10X and the “dual-screen PCs” it targets that it would “be engaging with our app developer ecosystem … in the coming months.” I don’t believe it’s made a similar public comment about the Android-based Surface Duo.