It feels to me as if their thunderbolt experiment with the Mac Pro was entirely the wrong way round. What I suspect they'll do with the next round of iterations is go strong on thunderbolt with the iMac; at least 4 ports instead of 2. The iMac has a bigger market, so that's how they'll drive adoption. The Mac Pro, meanwhile, won't be so reliant on thunderbolt, although it will still support a good number of ports - why not? - still probably 6.
