DTM with Bluetooth 5 support (support for 2MBit and long range) will be released in SDK 14. (Expected release in ~ 3-4 weeks).
For testing the radio you can use the radio_test example in the SDK. It's located in the folder <SDK_InstallFolder>\examples\peripheral\radio_test
Regarding DTM and radio test example:
DTM and the radio test example
represents two different tests: DTM is
for Bluetooth testing and the radio
test example is for testing the radio.
For qualification for regulatory
standards like FCC, ETSI, etc. the
radio test example is most handy,
because those qualifications are
related to the radio itself.
