The PTS dongle only supports up to v4.2. Availability of 5.0 support is dependent on 3rd party vendors who provide Bluetooth SIG with the chip-set and host stack. Due to this dependency, we cannot provide a timeline for 5.0 support.
To qualify v5.0 designs, you will need to use an over the air analyzer to capture packets and submit this evidence when qualifying the device. Other options are to use your own custom test harness to capture evidence or use a consultant.
Please note that all features up to 4.2 can be tested with PTS and only the 5.0 features would require these alternative methods.