currently only beta verison available, after 17.10.2019 you can download eoan ermine stable release

warning

this is beta release kubuntu beta release are not recommend for:

• regular users who are not aware of pre-release issues
• anyone who needs a stable system
• anyone uncomfortable running a possbily frequently broken system
• anyone in a production with a data or workflow that need to be reliable

kubuntu beta releases are recommended for

• regular users who want to help us test by finding, reporting and fixing bugs
• kubuntu, KDE and Qt developers

command for upgarde to eoan ermine beta verison

first your are in 19.04 verison kubuntu before you upgrade to 19.10

• Ctrl + Alt + T = open terminal aka konsole

• sudo do-release-upgrade -d

if you are upgrade after 17.10.2019 use this cmd and upgrade to stable version

• sudo do-release-upgrade -c