My prediction: She'll play the same schedule as this year. I know Charleston was a last minute decision after bombing out in the fourth round of the AO, and maybe she won't play if she goes all the way in Miami, but I think she had a great time there last year.
She should play Charleston, imo. She loves it there and the support she gets is unparalleled almost anywhere. Plus, she is defending champion so to skip it would seem silly. After that she has about a month off to get ready for the European swing.
Then she'll play Madrid and Rome.
I mean, she's played for 15(?) years now
She's never really changed her schedule too much. What else would she play? Stuttgart? I find that unlikely.