sergo75 if Solus OS has GUI app for install/uninstall Flatpak applications will be almost the perfect Linux distro.
I'm not sure what you mean by "almost..." 😊 Many of us think that Solus is already the perfect distro, and getting even better with each update.
Seriously, the Eopkg package manager is going to be replaced by an entirely new one, called Sol. I believe it will first appear in Solus 5.0, but perhaps a team member could confirm that based on how things are proceeding so far. The Solus Software Center has always been a front-end for Eopkg, and the new package manager will have a new graphical front-end. Flatpak will be handled gracefully by both.