Abby is going to be doing a movie. Check out her great site http://www.ashleybenson.net
You can read more about her there. Urh... I posted in the comings and goings which day she was leaving which I think is May 2? Eeep, don't quote me. I can't remember!! LOL
Stefano... well, you can probably write to NBC which is your best bet. The address is in the FAQ to your left and here, below.
Days of Our Lives
c/o NBC Burbank Studio
3000 W. Alameda Ave.
Burbank, CA 91523
Or email them at:
(In the subject line, write: Days Of Our Lives)
Not sure about Renee but I hope she returns. Stefano will be here for just a few episodes I'm told but that's all they tell me. :(