Great!
I made a research about 802.11ac and I saw that is hard to be supported now in OpenWRT
(was some tries on TP-Link WDR7500 / Archer C7 that didn't work and after somebody in
OpenWRT community was trying on Compex  acWave WPJ344 + AC card[1]), but this new from
Linksys is a good new. I saw price in 300$. Not bad, but could be better in future.
I sent an email to contact in post.
I could be nice Libre-mesh be first on using AC in real world and communities ;)
[1] I wrote a review (catalan):
  De: "Gioacchino Mazzurco"
<gio(a)eigenlab.org>
 Para: dev(a)lists.libre-mesh.org
 Enviados: Jueves, 16 de Enero 2014 0:48:23
 Asunto: [lime-dev] Fwd: Re: [OpenWrt-Devel] is anybody working on	supporting Linksys
WRT1900ac ?
 
 Seems an interesting device, maybe we could receive someone if we ask
 as
 Libre-Mesh ?
 
 
 ----------  Forwarded Message  ----------
 
 Subject: Re: [OpenWrt-Devel] is anybody working on supporting Linksys
 WRT1900ac ?
 Date: Thursday 16 January 2014, 10:37:12
 From: Peter Lawler <openwrt-devel(a)bleeter.id.au>
 To: openwrt-devel(a)lists.openwrt.org
 
 On 16/01/14 10:06, Peter Lawler wrote:
 
 Even worse, replying to my own reply
 
 Further down that page is commentary about OpenWRT, DDWRT etc.
 
 It also mentions they're planning to release devboards to developers.
 
 It also gives a name, email address and phone number for a contact
 about
 the product.
 
 I'm not in the same TZ as the contact, by ~15 hours. Maybe someone on
 this list who is a little closer could call up and ask what's what ;)
 
 Pete.
 _______________________________________________
 openwrt-devel mailing list
 openwrt-devel(a)lists.openwrt.org
 
https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel
 -----------------------------------------
 _______________________________________________
 Dev mailing list
 Dev(a)lists.libre-mesh.org
 
https://lists.libre-mesh.org/mailman/listinfo/dev