Thanks to oengland for starting this poll! We've contacted the vendor on your behalf and they've made the Audioengine W3 Wireless Audio Adapter available.
I kickstarted the Rocki's, there are some early teething issues with the mobile apps and multi room sync is still being worked on (1-2 months away) but in the current iteration it works great as a wireless audio receiver and for the price you can get 3 for the price of the Audioengine.
The Audioengine W3 is a great, great piece of kit. I've had it for as long as it's been out, and had the W1 before it, and I use it every day. It's basically an invisible lossless audio cable between whatever you plug it into (or plug into it, via a 1/8" plug) and your receiver, worth every penny (and I paid retail).