If the dot/dithering pattern/algorithm oif the 3800 is superior to that of the 4800/7800/9800 is it something that Epson can add to the 4800/7800/9800 printer through a software/firmware/driver update? Or is it very much a function of the 3800 hardware?
Who said it was superior? It looks very similar to the other x800 printers. A little more analog looking which I think is better, but the difference is subtle.
And no, Epson will not offer firmware. The improvement comes from a more precise paper feed mechanism in the 3800. If your paper is not dead flat, the 4800 could be better than the 3800 becasue of its vacuum transport, so again, it is subtle.