Maybe, but it may be something they're doing for the 60th anniversary, too. We'll know more when we find out about the other titles.
I've been wondering about that, too. You may be right. It's going to be a long wait until August.Also taking a second look at the cover, i notice that only Magik, Dani, Dust (white figure behind Magik) and Marrow (white figure behind Dani, also short hair which is a good sign for her design) are visible on the cover, which might hint that they are core team, while Mary and Curse might only be more "along for the ride" characters.