https://newsroom.intel.com/news/intel-takes-steps-enable-thunderbolt-3-everywhere-releases-protocol/#gs.MzaPtlZA
 
Intel is well on its way to making the innovation delivered with Thunderbolt 3 available to everyone. Today, Intel announced that it contributed the Intel Thunderbolt protocol specification to the USB Promoter Group, enabling other chip makers to build Thunderbolt compatible silicon, royalty-free. In addition, the USB Promoter Group announced the pending release of the USB4 specification, based on the Thunderbolt protocol. 
 
Intel’s upcoming 10nm processor code-named “Ice Lake” will be the first to integrate Thunderbolt 3. Processor integration, combined with today’s announcement, is expected to drive large-scale, mainstream adoption of Thunderbolt. I think every company that has wanted Thunderbolt 3 but waited will now have incentives to incorporate it. 

That's damn fine news. Not 24 hours ago I was ranting on this very forum about the seeming roadblocks to widespread TB adoption...

That's a bit alarmist. It would require physical access to a system, a special cable or peripheral, and fairly sophisticated knowledge to execute. I doubt most of use are in a position where a malicious person capable of this has physical access to our system or we are duped somehow into using a compromised cable or peripheral (and then following that someone would need remote access to our machine).
 
Thunderbolt certainly has its flaws (and security flaws) but I think it's very cool and promising and a step forward.

ah i misread about usb4, thinking at first it was the next gen of tbolt.