Microsoft started the HoloLens development edition recently. The company is selling the development edition of the HoloLens for $3000 to selected developers in waves. Today, the company aounced that it has started shipping Wave 3 of devices to developers. In addition to this, the company also aounced that the company will now ship every wave faster – unfortunately, there is no specific information about this just yet.
You can know more about the HoloLens Development Edition here, and apply to get a development edition here.