I get a black screen with some green bands.
Currently a known issue, will be fixed with later updates.
How/where can I be notified of such updates, or check on their status?
Hi, the coreinfo issue has been fixed, you’ll need to update coreboot. You can either wait until we finalize an easy way to push updates to people (either through a script/deb package with a pre-built image stripped of non-distributable components, or through a similar script distributed through fwupd), or you can simply build coreboot yourself on your machine. I’ve released a script to do that and you can read about it here : Building coreboot from source (official script)