Well been thinking about a few key add-ons for the next version.
One would be the talked-about showing if there are updates available when you launch. Basically using calls using pkcon - credit @Sebastian and the flapak remote-ls --updates command I can quickly check. It will show on the Welcome screen as well as the Update System screen. It is low overhead, so it doesn't really slow things down. When there are updates for system or flatpak it will show how many. This is not a system notification, but looking into something on that as well.

The second part is the Flatpak equivalent to the System package management. You will be able to list, search, install/uninstall Flatpaks the same way you do regular system packages. There were some limitations on the flatpak command on getting proper details, so I have to use appstreamcli to get the full details of a package, but that is already on Solus, so that helps.

This would allow for a more complete package management system where you could do both system and flatpak packages. It will be a separate list, so not a universal search across both at first, but will see down the line.
No etas on this as the current version is not even in the Stable Solus repo, but just want to give a heads up on what is coming.