I'm looking for a Kindle-style reader device which supports offline RSS reading, either built-in or via a third-party app. It would ideally be a standard RSS reader app running on the device directly, but failing that, it could be a cloud-based solution that would push regular digests/periodicals to the device. I wouldn't want anything requiring cables and syncing to a PC.
I'm surprised that I've been able to find a single app or service for any such device, but maybe I overlooked one in my research.