[GTALUG] Ubuntu update 19.10 -> 20.04?

I have an Ubuntu 19.10 system (I'm typing on it now). I want to upgrade it to 20.04 (released over a week ago). $ sudo do-release-upgrade Checking for a new Ubuntu release No new release found. The Ubuntu Software's GUI Software Updater also sees nothing. A Quick look at the /etc/apt/sources.list suggests that I'm using ca.archive.ubuntu.com. Does anyone know why I don't see 20.04? Odd observation: Software Update said that there were no updates. But as I typed this message, with no button pushing by me, has changed its mind and decided that there is now an Nvidia driver settings update.