I believe the PTO will be standard on the 3 pt version, much like a tractor. Lots of attachments require a pto. The lift capacity of the 3 pt should be 2000 lbs. PTO hp about 30.
I spoke with another dealer the other day who seemed to be fairly knowledgable on the upcoming 3 pt version. He said that the 3 pt version will not have any cargo/dump box according to what he knew.
On the current D series with dump box, the radiator and fan sit immediately behind the spine frame and extend the length of the toolcat by about 20 inches and are level with the top of the spine frame. The dump box currently extends over the top of the radiator fan. On the 3 pt version, the radiator and fan are placed on top of the spine frame and placed immediately behind the cab. The lift arms take the place of the previous fan location. Therefore, on the 3 pt version, the overall length was not changed significantly with the addition of the lift arms. Also the 3 pt arms are attached to the spine frame which is very strong and the arms are close to the rear axle/suspension. This allows maximum lift without elevating the front of the toolcat. The fan behind the cab would sit about 12" above the top of the spine. Any cargo/dump box on the 3 pt version would have to sit over the fan (now located behind the cab) and be fairly high from the ground. Possibly a small cargo box could sit on either side of the fan.
On the 3 pt without a cargo/dump box, a plastic cover sits around the fan and extends to the side of the toolcat. The overall distance from the cab to the lift arms is about 3 feet. At the most, any cargo box could only be about 3 feet in length.
If the dump box is deleted, I hope the cost for the 3 pt and pto may not increase the price too much. A 3pt should not be too expensive to develop as parts are already available. The pto has be used on other models and is basically a hydraulic motor. 2-3 rear hydraulic outlets maybe another expense.
Dealer also told me when they were initially designing the toolcat, the early concept was to make the cargo box removeable. It was hoped to be like a roll-off container used by some trucks. Slide the box off the back, and load it with the toolcat. Then pull it back on the toolcat, lock it down, take the load to its destination and dump it. Alais, this has never happened.