Hi there,
Yes, so I went to the drawer and found I have all three, Nrf52DK, Nrf53DK and the just opened Nrf54DK. I use the Nrf52DK mainly, At one time I thought Seeed would do a Nrf5340 but they didn’t SO, The Nrf54DK is for future dev work. 
There is so much info on the Nrf52DK i think it’s very worth the investment and You still get the J-Link as a bonus. 
HTH
GL 
PJ 