Tenda Adds AC1900 Router

Hi All,
I was reading the article about the Tenda AC15 AC1900 router
http://www.smallnetbuilder.com/wireless/wireless-news/32810-tenda-adds-ac1900-router

On the FCC site, looking through the internal pictures, it looks like it has the same Broadcom BCM4709A0 CPU cores and BCM4360 radios, making it similar to the Asus RT-AC68U.
https://apps.fcc.gov/eas/GetApplicationAttachment.html?id=2719955

Any idea how a router like this might get prioritized for 3rd party firmware...

Tenda Adds AC1900 Router