Hi Gary, Before the end of the year, once we have an excess of these three board sets in stock. We do not want to starve regular K3S production. 73, Eric elecraft.com _..._ > On Sep 23, 2015, at 11:43 PM, Gary <vk1zzgary at gmail.com> wrote: > > Anyone heard of a release date for those wishing to upgrade their k3 to have the USB option?