mobile

You are looking at Cyanogen's latest April 14, 2015 Unofficial build of Nexus 9(Flounder) w/ LTE support.
If I am not mistaken, the lte version should work seamlessly with the wifi version.
It's UNOFFICIAL, KNOW IT. Experimental. As-IS. Read: "I am liable to myself."

Things you should know:
-My first build. Its untested. Successful build
-BACKUP
-You should probably have bootloader unlocked

WARNING : You should be aware that encryption is live straight after the flash.

You can download it here:
cm-12.1-20150414-UNOFFICIAL-flounder_lte

If the LTE version does not work for WiFi edition:
cm-12.1-20150414-UNOFFICIAL-flounder

Gapps can be had here

You can download -NonEncrypt- newBoot here:
newBoot.img

Credit:
CM Team
cdesai
bynarie

I'll add more information here