First, let's get a motor and electronics that are reliable.
AC hasn't published weights because they are still scrambling with the final design of the prototype. They either have to guess - or hold off - they decided to hold off. If they COULD publish a weight, as in, they know what it will be, they WOULD. They can't. Yet.
Another clue - with no prototypes available for customer riders, yet, they are also pushing the timeline. Just pushing these over the line now. They might get it right, but the risk is higher. Doo, and now Poo, have recognized that putting proto's on the snow early is the greatest momentum builder for sales, spring and fall. If cat could, they would. They can't, yet.
All OEM's buy or trade for each other sleds to test against. Go in the back of TRF's Engineering doors, and you'll see all the latest from each OEM sitting outside. Same for the IP facility. Cat and Poo used to actually trade two racers halfway between TRF and Rosseau every fall. Just how the biz works...