Jeff is right, talking about specific details in the draft may be misleading. The rules will be final when the ink dries in the books. Anything written here is premature and unofficial. We don't need to make problems for teams or officials with changing information.
Having said that, you can keep in mind that tournaments don't like to invest in new hardware every year, so it's unlikely that the testing apparatus will change. This is still a relatively new event, so don't expect parameters to change drastically. It was mastered by few.Things that are easy to change are height, clearances, loads, detailed dimensions, stuff like that. The general concept won't change so much, so whatever you were working on last year will make a decent starting point. Whatever you actually built for last year will probably not be directly usable, but that really doesn't matter for now.
Take a break, you deserve it.
Grand Haven, MI