Great to get more info on this item, even if we need some clarification.
This is an item I have been waiting patiently to get more details on. I have the '99 Jabba Glob version but skimped out on the '04 revamp of that mold. Jabba's Palace is the only shelf display I haven't made yet, waiting for the good Jabba Hasbro has been talking about getting out there for what must be years now.
As for the dais, I really hope they are including it (as I said, I need that piece for my shelf and either I have to scratch build one or make the rest of the shelf around the dimensions Hasbro settles upon) but if this is now for sure a standard battle pack I find it unlikely. The Clone Wars Jabba was an all-new sculpt with a completely rehashed figure and a completely rehashed accessory. For sure we are getting a brand-new Jabba and a brand-new figure (unless they can somehow rehash parts from the Slave Leia?) I don't see how they could put in a dais that is anything substantial...maybe it will wind up being a flimsy piece of packaging plastic a la the Lars Homestead base or Sarlaac Pit extension? That would stink, but I'd take it over nothing at all.
I thought they had talked about putting out a Jabba with Dais pack as an exclusive if they found the right place for it...my gut says if this is a standard Battle Pack then the dais has been costed out of the equation.