Will they be updating the flightaware packages to support ubuntu 20.04
Please see this post (and subsequent posts as well):
We only build/test packages for Raspbian and there are currently no plans to change that.
However the packages should build fine on Ubuntu and I’m happy to fix any problems you run into there - please report the details in a github issue.
I have built dump1090-fa, piaware, and dump978-fa packages from source code and installed successfully on Ubuntu 20.02 amd64 and Ubuntu 20.04 amd64 on PC and also Ubuntu aarch64 on RPi Model 4.
All this I could do using installation scripts I have linked in my above post.
I did face some problems initially with dump1090-fa, but after recent commits by Oliver (@obj), building package is without issues.