Yep, Thunderbolt offers some nice flexibility with interconnectivity with that PCIe-like capability. But it's locked in, under-utilized, and supremely over-expensive on cables while devices carrying it require their own premiums... it may catch on in the future after the costs drop to nothing and a wider array or newer devices begin using it, but until then USB 3.1 looks fine to me.
What's newsworthy about it is that if you want Thunderbolt 2 capability, you need a thunderbolt 2 capable device + controller. The Thunderbolt stuff on the market isn't going to cut it. It's a shame they couldn't make it a flexible design in channel configuration, then it wouldn't have been an issue or a need for TB2 in the first place.
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