3 1/4 inch scale is the theme this year it seems with retailers in general and there is a whole slew of DC superheroes coming.
Mattel didn't really have anyone available to talk to about the Collector lines so I don't have specifics. There were some 6-inch scale figures in the mix...
... as well as larger 12-inch scale versions of characters.
DC fans should be pretty happy sculpts on all the different scales looked great.