If you want it, then get it.
http://qoe6rdttrncugsow.myfritz.net/bike/public/raspberrypi-ubuntu-rpi3Bplus/
I had create any “Homebrew” preinstalled Images , they runs on Raspberry Pi2 / 3 / 3B+
I had use the Update-Assistant (packagemanagement) .Kernel ist updated to 4.14.77
Ludger