Kubuntu 19.10 Eoan Ermine was released on October 17th, 2019 with 9 months support.
As of July 17th, 2020, 19.10 reaches ‘end of life’.
No more package updates will be accepted to 19.10, and it will be archived to old-releases.ubuntu.com in the coming weeks.
The official end of life announcement for Ubuntu as a whole can be found here .
Kubuntu 20.04 Focal Fossa continues to be supported.
Users of 19.10 can follow the Kubuntu 19.10 to 20.04 Upgrade  instructions.
Should for some reason your upgrade be delayed, and you find that the 19.10 repositories have been archived to old-releases.ubuntu.com, instructions to perform a EOL Upgrade can be found on the Ubuntu wiki .
Thank you for using Kubuntu 19.10 Eoan Ermine.
The Kubuntu team.