Does QB's HighChart License Encompass Version 6?

QuickBase is currently using HighCharts version 5 (Highcharts JS v5.0.14 custom build (2017-09-08)) and I assume QB has a custom bulk license agreement with HighCharts. 

However, I have client that wants to use some of the new chart types released in v6:

Announcing Highcharts 6
https://www.highcharts.com/blog/news/announcing-highcharts-6/

I am wondering if QB's agreement encompasses access to HighChart  v6 even though QB has not itself upgraded to v6. I have a parallel inquiry to HighCharts,

The specific reason I ask is that there is a new xrange chart that would be extremely simple to integrate with QB data using script and would have a lot of applications:



https://www.highcharts.com/demo/x-range