We do not have information available until the product is launched.
If I can read "good news" into your replies then that is great news. There are a few stories around about upcoming releases but the Tom's Hardware article sounds very official.
I can pass along a bit more information to you - but not the good news you were hoping for. There currently are no plans to include Thunderbolt on future Next Unit of Computing products.
Intel Product Support Engineering
I have to say I'm disappointed, particularly when you consider that the new i5 and i7 boxes will be competing head on with Mac Minis which have had thunderbolt for the past 2 generations. What worries me more is that Thunderbolt might end up being dropped altogether. For small boxes such as the NUC and the Mac Mini there will always be a lot of interference when you try to mix USB3 storage connections with Bluetooth transmissions. The Mac Minis have been heavily modified in an attempt to combat this. I have a NUC and a Mac Mini running side-by-side with an 8TB G-Raid connected by Thunderbolt to each one and can happily run my Bluetooth keyboard from about 20 feet away. If I attach ANY USB3 external storage to the Mac Mini my Bluetooth range reduces to 5 feet (on a good day!) AND I have added additional shielding to the Bluetooth module.
If Intel can't economically add Thunderbolt to their own motherboards in this range I guess the message to the market is that Thunderbolt is dead.
For whatever reason you dropped Thunderbolt from the new NUC units, political or engineering. There are people on tonymacx86 running Mac OS 10.8/9? on the NUC
I have just put one of those Thunderbolt NUC's into my basket. Why would I spend at least twice the money on a MAC?
Personally I'm going to attach various devices to my NUC, running both Windows and MacOS for Office and audio production. I'm looking forward to see what Intel's talented engineering force built here with the NUC and Thunderbolt.