I doubt they will match Kobo there since Kobo literally has been updating every single model they've ever made except for 3. Although Kobo has a tendency to keep the best features reserved for newer models like Overdrive, Dropbox, etc even if the old hardware is basically identical to the new.
But that said they've surprised me. As a niche Android device from a Chinese company I expected absolutely 0 updates but my Nova 2 has gotten several with some significant improvements like the ability to split screen apps, layers in the note taking app and more. I've had Android phones from big manufacturers with worse support.