Yep. As close to 'resolution independence' as we've seen so far. Can't wait to get mine and try it out for real.
I do however doubt that we'll see a next-generation 17" retina mbp, though I suppose a version using a retina display in the current enclosure might be possible.
^^ Honestly I don't see them spending the engineering resources to make a next-gen 17.
This is what is upsetting me about Apple lately. They are now the LARGEST company in the world! Yet they are actually reducing their product lines and giving us even less choices than when they were smaller. Then they don't release new drivers for older machines to make them Mountain Lion compatible, when they certainly can afford to. And they let the pro market languish. Where is the new Mac Pro and Aperture 4? They have no excuses anymore. We shouldn't give them a pass on these things.