Comment 1 for bug 1766063

Thanks for your report and your patch!

However, this is too late for Ubuntu 18.04, which will be released in a few days. Many users change xkb-data files to set up personal keyboard configuration, and we don't do stable release updates of this package unless absolutely necessary, since it would overwrite such changes.

I see that it was included upstream, so the new Burmese layout variant will most likely be included in Ubuntu 18.10.