I'm tracking the delivery and production date trackers. . .when the 100Ds start getting produced, if there are 90D orders outstanding, propensity for 100D software limited battery pack goes up. As yet the only 100Ds in production are the Performance models. I'm sure they can swap out the battery packs (since they have 75D too), but have to assume that if the 90D precedes production of 100D no way one gets the upgrade. Again, Irish, rose colored glasses half full, yada yada. Longer mine takes to get into production the scarcer the 90D batteries will be. . .