Yes, one of mode in the Spectrum configuration that called 'Sprinter ZX' has additional features like high resolution, extended memory, etc. It's could be used for learning a new Sprinter's features. Also it could help game makers for improving old spectrum games.
We are plan to increase software for Sprinter. And hope that another programmers will cooperate with us for it.

flydream:
>Perhaphs games written for 256 colors emulator could run
>on it!

So I asked about it. :) I was thinking in the same way.

Denis:
>Also it could help game makers for improving old spectrum
>games.
>We are plan to increase software for Sprinter. And hope
>that
>another programmers will cooperate with us for it.

I thought it will be helpful for you if there are some already improved games and editor for improving more of them.
Just a thought of course...