In collaboration with NASA's Quesst Mission, the Lockheed Martin Skunk Works team is solving one of the most persistent challenges of supersonic flight the sonic boom.

 

https://www.lockheedmartin.com/en-us/products/quesst.html

From CNN : 

https://edition.cnn.com/travel/article/x59-nasa-supersonic-plane-scn/index.html

There are models of this for XP11:

NASA X59 XP11 Summer Camp Models

In case someone is interested and has an XP11 install. They are not payware quality obviously, but good enough for a test ride.