Magic Leap just announced a preview of its software development kit and "creator portal," which will offer resources for people who want to build for its yet-unreleased Magic Leap One headset. You can now download a preview build of the Unreal or Unity engines, designed for what Magic Leap dubs "spatial computing." This is one of Magic Leap's juiciest announcements, marking one of the secretive company's first steps toward establishing itself as an open platform. It also may be a sign that the company is finally close to releasing hardware. The Verge reports: The creator portal touts a set of tutorials, a community for technical support, and a "Magic Leap Simulator" that will presumably help people preview apps before they get a headset. The Magic Leap One was announced late last year, and it's supposed to be released this year, but we still don't know details about the exact date or pricing. The portal says that a marketplace called "Magic Leap World" will launch soon.