If you're a victim of this, hopefully this little HOWTO will help.
If your data source (zap2it/schedulesdirect) has already picked up the new lineup, the normal update script, mythfilldatabase, seems to do this job really well.
You probably have a file in /etc/apt/d called mythbuntu-0_27which should have something like this in it: deb trusty main If so, change the 0.27 in both lines to 0.28 and rename the file to mythbuntu-0_28
But MCC has had some bugs in how it has done this in the past, so you need to check the /etc/apt/and all the other /etc/apt/d files to make sure they do not have any other Myth TV stuff in them that should not be there.
To actually upgrade the underlying Linux which "Kodibuntu" is based on, it is possible to do so via release upgrade.
Our presentation of software updates should carefully balance promptness against interruption, and automation against informed consent, to maximize the prompt installation of updates across the millions of devices on which Ubuntu is installed.