Electronic digital shower faucet retrofit.

I'm looking at replacing my current shower faucet. It's old fashion three handle, hot, cold, bathtub/shower diverter style, coming through a tiled wall. I'd like to put in one of the new fangled digital types. Does anyone know of something that might be retrofitted into the existing three holes currently in the tile (I have full access to electricity and the plumbing on the other side of the wall). Thanks!