As promised, pre-orders have started for the Microsoft HoloLens Development Edition. Invites are being sent out to people who registered to get the hardware and tool. They are designed to offer developers an easy way to make apps for the augmented reality head set. The tools and hardware costs $3,000 and will start shipping on March 30.
In its blog post, Microsoft's HoloLens leader Alex Kipman points out that the HoloLens headset is a self-contained product and does not need a connection to a PC or other device to work: