The sole purpose of this post is to accumulate more information regarding raspberry pi 3 running in 64bit kernel 4.11.y from the main raspberry repository together with arm64 ubuntu base rootfs. I manage to boot it up all the way up to using apt-get to update it's default installed packages directly from ubuntu's repositories. wifi works, but the rest is still untested. You may visit my starting blog if you want to look at the procedure that i do. will upload a beta image soon.
New site: http://a-delacruz.github.io