I'm planning to buy a new iMac to replace my aging Mac Pro, but I'm holding out for the following features: 1. Thunderbolt 2. This seems like a no-brainer to me. The original Thunderbolt is already a legacy interface, so there's no reason to buy an iMac without its successor unless I have to. 2. USB 3.1. This is less of a no-brainer. The fact that it represents a very substantial speed increase over USB 3 is enticing, but it may be another year before it actually starts shipping with PCs, let alone Macs. 3. Lastly, Broadwell processors. Considering the heat issues some iMacs have had in the past, the die-shrink and resultant drop in heat production represented by Broadwell is really attractive. But again, this is likely a year away at least. Any predictions for how long it will take for this machine to arrive are welcome as are suggestions that I'm being ridiculous waiting for some (or all) of these features. Thanks in advance for your advice!