The development release of Ubuntu 19.10 (Eoan Ermine) beta is out today. Follow these steps to upgrade to the newest Ubuntu release:

Update Your Current Distribution

1. Update your package list:

sudo apt-get update

2. Install the latest version of your packages:

sudo apt-get dist-upgrade

Upgrade to the Latest Development Release:

3. Run the following command with -d option to obtain the latest development release of Ubuntu:

sudo do-release-upgrade -d

After that, Ubuntu will guide you through the rest of the installation.