Since Batch 4 is being released, is there going to be an updated firmware and will lightning node be added?
I'm working on a 'community OS' for this device which has Lightning and everything you'd want in a full node,
there's a guide right here. However I have build issues with latest
nodejs for the web GUI. If that's not important for you, you can follow the guide; it even keeps the blockchain download. If you install it on a secondary microSD, you can even switch back to the one Futurebit provided you if there are any issues.