reMarkable is doing a decent job, their first generation device launched in 2017. Still getting updates. It is discontinued for sale, but there is no reason to believe reMarkable will stop updating their other devices if they're _still_ updating a device they don't even sell anymore.

On top of that, their aftermarket and open source situation is pretty good.

They're not ideal e-readers though, but if you're in the market for a good e-ink device with long-term support and that works well with calibre? Might be worth a look.

until the software compatibility with the older model compromises the newer models. Kudos for them for still updating a device no longer on sale, but Apple does the same, until it doesn't. The fact that they are still updating the first generation today does not mean they will do so tomorrow.

That said, remarkable are great devices as well.