Unfortunately not, so I guess several MacPro users will have to use precious TB ports for a 10Gbit connection.
Aware of that, I guess I wasn't clear. I was implying the reason why they DID NOT ship 10GbE on the new pro. They could have, but it would have been wasted for the 90% who do not have 10GbE to the desk. Thunderbolt can provide 10GbE on that port IF someone needs it, if they don't they can use it for fiberchannel or something else.
The next USB3 upgrade (seem to be scheduled to next year) will increase the theoretical bandwidth to 10Gbit. Leaving even less space on the market for TB. At the highend side TB has to move fast forward to be able to be a viable solution for 8k editing.
Meanwhile, the next thunderbolt upgrade will be 40Gbit.
And you have ignored the issues of CPU overhead, protocol translation and latency, all of which USB sucks at. Badly. More bandwidth over USB will only exacerbate the problem and further the performance advantage of thunderbolt. There's no way you could effectively do a 3d accelerator over USB for example - the protocol overhead is horrendous. People seem to confuse link signalling speed with performance, and it's not the case. Thunderbolt gets close, but USB is about 50-60% of the actual wire speed once overhead is taken into account for a typical peripheral.
Compare people's SSD performance on a USB3 port vs native SATA3.
Thunderbolt is faster than SATA3, and can actually provide a SATA3 port as easily as anything else.
I have no figures, but I would guess that today more professionals uses laptops than heavy work stations (at my work it certainly is the case, all heavy lifting and storage is centralized). A logical use of TB is to get rid of some of the last workstations. Just connect external GPUs, a couple of displays and very fast storage to your laptop and you, at least theoretically, would have good rendering performance and fast storage while also having a flexible and very mobile system.
The new MacPro is such a small niche that it will most likely not affect the TB adaption at all. In this forum it has been shown lot of examples of faster solutions that can be used on earlier Macpros.
TB as "the port to rule them all" is a hard road ahead.
Depends on the industry you're in.
People seem to see the word "pro" and think heavy CPU or GPU user. A lot of people (who are professionals) aren't. I'm a professional network engineer for example. I use a Mac Pro. Could I get by with an air? Probably for most things. The reason I went pro was simply for RAM/storage capacity, screen size and gigabit ethernet. CPU is way faster than I actually need and GPU is irrelevant for me for actual work.
But if you are a professional 3d modeller, producer, etc then a laptop won't generally cut it unless you have no alternative.
If you have a desk, you wan't a desktop for more power and storage expandability.
But yes, I agree - thunderbolt GPUs will be a win.
Get rid of the discrete GPU in my machine. it's useless on battery anyway (which is what it will be running off when I'm not at a desk) as it chews too much power. Replace the consumed space with battery capacity.
A desktop GPU over thunderbolt will be faster, even if it's only got 10Gb going to it. Future thunderbolt versions will be better.