Why does all of this matter? If Microsoft doesn't actually get developers on board with its dual screen ambitions, Windows 10X and those new Surface devices will basically be dead on arrival. And the timing is pretty tight, as the company still expects the first 10X devices to land by the holiday season. In addition to the Surface Neo, we expect to see Lenovo's ThinkPad X1 Fold, as well as devices from Dell, HP and ASUS.
Remember that that iPhone only truly took off once Apple opened the App Store, which created a new ecosystem for mobile software. The lack of developer support is one reason why Android tablets have floundered for so long. These new tools show Microsoft is actually trying to meet developer's needs. And, surprisingly enough, the company also isn't forcing them to rely on its app store for distribution. If a developer chooses, they can offer their dual-screen Windows 10X apps over the web, just like a standard Windows app.