I'm not even sure when motherboards with the new USB 3.1 are going to be released but I'd guess PCS will have them available not too long after that (especially if they are refreshes of motherboards they already sell).
They're already on the market in the US, so presumably soon, just wondered if PCSpecialist could provide an estimated time frame.
I'm waiting for Skylake just to see if Intel really have bothered to breath a new lease of life into their CPU range, hopefully it's available by then.
There are very few usb 3.1 mobo's at the moment and I don't expect any until skylake to be honest. Currently there's also the lack of cables etc. But I guess they'll be here at the end of this year or early next year.