ASUS announced the first router based on the draft 802.11ax standard at IFA in Berlin. The RT-AX88U is a 4x4 design using Broadcom's 11ax platform, according to WikiDevi.Neither price or availability was announced.
More information is in the press release below.
ASUS Presents The Edge of Beyond at IFA 2017...
And So It Begins... Asus Announces First 802.11ax Router