I just did the standard upgrade:
(repository ppa:mutlaqja/ppa):
sudo apt-get update
sudo apt-get install indi-full kstars-bleeding
The software is updated to 3.5.3 (kstars-bleeding), but after starting kstars, the Ekos option is not found in the Tools tab. Scratching my head, I removed and re-installed but still no EKOS. Was the option missed during the build process? I am running Linux Mint 20 and was upgrading from kstars 3.5.2 to latest. After the installation the help/info shows: KStars
Version 3.5.3 Stable
Build: 2021-04025T15:57:41Z
Cheers,