Days fans whos coming and who's going?

Besides John and Marlena and Jack who else is coming back, for sure? I had heard rumors that Nathan and Lucas both were, but I know that's just a rumor. So, have any of you heard of anyone else coming back. As far as those leaving so far all I know is, Vivian, Carly, Chloe, Taylor, Dario, and Quinn, but are they tossing anyone else to make room for some more Salem favs?