That is one place, you can also get it thru the 1.1.1 sdk
Both have to be requested on the Qorvo site under the UWB section.
You must have a non Gmail/yahoo/ms email address
1.1.1 sdk found grew on the cdk page
https://www.qorvo.com/products/ek/DWM3001CDK#key-features
For the QANI build see