can't speak for the IL one, but ones I've been to ( Mi, CA, OH) had lots of DL stuff some really cute stuff, some stuff I saw/bought in 2011 when I was at DL. I've seen pins, viynalmatians, toys I saw at Disney store down the road, lounge pants, pj sets. T shirts, beach towels. Basically end of season stuff, in January I saw a lot of holiday items. I'd expect a lot of DL stuff and some WDW stuff. I've bought some t shirts and vinyls.
I was there for the opening of the rosemont mall I have been back a few times visiting the disney every time not all stores are outlet stores the products in the disney store are just what you see in every disney store nothing like the outlet mall in Florida the prices were also regular price except for sale items