I read that Seles is hoping to come back and play a limited amount of tournaments (most likely Grand Slam events) and that she feels she has 4 or 5 more good tournaments in her before she plans on officially retiring. Her foot injury was rather serious from what I understand.
I still am not sure whether I believe that she indeed will make another comeback. My money is on no because I don't see it happening, but from the pics I have seen of her lately she is in excellent shape and MUCH thinner.