This message was posted on behalf of Intel Corporation
The unit is supposed to be available very soon, according with the ark website the shipping date is 4/29/2016, you can purchase the unit at the following link when it is available.
You can as well check the authorized reseller like Amazon, Newegg, Tiger Direct etc.
If you need further assistance with presales information, you can submit a web ticket at the following link:
Amazon shows it being shipped May 15th...