I hope that they have improved the Hasselblad Quick Release tripod mount. The one I bought 10 years ago was the only piece of Hasselblad equipment that I have ever thrown in the trash can. From memory it only had one horizontal spirit level and no locking pin. The new one might be better. But, after my experience, I would test it carefully in a controlled environment (hold the camera over a bunch of soft pillows).
The previous Hasselblad Quick Release tripod mount gripped the base of the camera with a spring-loaded lever. At the wrong angle, with a heavy lens and flash unit on board, the camera could lever its way out of the mount. Happened to me once. The only thing that saved the camera was that it crash landed on the Metz flash unit which immediately shattered into a 100 pieces. That shattering must have absorbed enough of the impact to protect the camera, which is still going strong today.
For tripod mounts, the solution I ended up with is to replace the original "foot" on the bottom of the camera body with one from Clearsight (
) then use any of the "arca" style ball heads. My favourite is the "Ultimate Ball Head" from Acratech (
). The Clearsight foot is good because you do not need to leave a QR mount under the camera, making it better to hand-held and lets it sit flat on a table.
Regards
Peter