I'll try to get a picture of them some time this week!
I'm trying to remember the new Aurora dress from DL...I know it actually had little straps to hold up the sleeves. The old ones are always falling off the little girls' shoulders. The fabric looked nicer too.
The new Snow White dress has a lacey collar, more detailing on the bodice and sleeves, and has a design on the skirt rather than all over sparkles. It seems to be really popular- I'm suddenly seeing more Snow Whites than before. The new Tink is a brighter shade of green and is designed to look more like leaves. It has a bubble skirt and is no longer a leotard like the old one, so if you choose it, you might want some shorts underneath as it's a bit short!
No new Cindy dress has surfaced yet, but rumor is that all the princesses are getting new dresses. DL had both the current Cindy dress and a new long sleeved one.