Yes, snapshot builds are available at this time.
https://git.openwrt.org/?p=openwrt/openwrt.git;a=log;h=819e7946b0964725dab50c92797f49cf4053d955
ipq40xx: Add support for Linksys EA8300 (Dallas)
The Linksys EA8300 is based on QCA4019 and QCA9888 and provides three,
independent radios. NAND provides two, alternate kernel/firmware
images with fail-over provided by the OEM U-Boot.
Installation:
"Factory" images may be installed directly through the OEM GUI.
[...]
I have on my list to include a full set of screenshots on how to avoid signing up with a Linksys account on first boot, though I believe that simply not plugging in "Internet" connectivity can accomplish it as well.