It certainly won't be 125 units if
DVC is involved, which makes the whole rumor shaky. Anaheim zoning code would have to be changed. That would be major and not under any radar. Last time such a change was proposed, it was voted down.
Disney is only permitted 150 timeshare units total in that zoning area. They can add a max of 79 (they are currently considered to have 71 as Anaheim counts units), and require a conditional use permit that Anaheim is unlikely to grant in the new development. None of the prerequisite filings for the permits have occurred - to develop units as timeshare, the builder has to file typical floor plans for each unit, a construction phasing plan, management stuff, some general boilerplate stuff about the timeshare operation, a parking study, and how they plan to collect the transient occupancy tax. It's pretty substantive. And the new build is using a special tax incentive, which complicates things in terms of filings and approvals. Disney has to have permission from the city to do DVC units, and the city may not want to bless what amounts to a double-dip (reduction of the transient tax + phat point sales profits).
If they were to add the 79 units allowed within code, having procured permits to do so, they will sell in a week. Even at a high points per night, that's less than 2 million points.