Installed flatpak and I see old versions in "Software"? (new to flatpak)

1

Yesterday I did:

sudo apt install flatpak
sudo apt install gnome-software-plugin-flatpak
flatpak remote-add --if-not-exists flathub https://dl.flathub.org/repo/flathub.flatpakrepo

When I look at Install PrusaSlicer on Linux | Flathub
I see version 2.9.0

When I open my “Software” app - I see version 2.8.1

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2

Your local software app probably hasn’t updated its metadata yet, considering the update to 2.9.0 isn’t even 24 hours ago (as of me writing this now).

You could stop Gnome software by running gnome-software --quit. When starting again it should load the new metadata.