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This is a feature that rpm-ostree is going to have at some point in the future. For the workstation use, we may need to reimplement this in gnome-software, so we can have meaningful UI for it.
On the rpm-ostree side, this is tracked here: https://github.com/projectatomic/rpm-ostree/issues/247
For gnome-software, this design incorporates automatic updates: https://wiki.gnome.org/Design/Apps/Software/Updates
we have automatic updates for flatpaks in f29. rpm-ostree will follow later
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