It was a 5-4 vote with Justice Kennedy writing the majority decision.
National Review has posted the text of the decision.
Planned Parenthood can't even bring themselves to say "so-called partial-birth abortion ban" in the brief comments on their web site about the ruling. They call it the "Federal Abortion Ban."
Bench Memos has some opinions on the opinion.
From the decision:
It is self-evident that a mother who comes to regret her choice to abort must struggle with grief more anguished and sorrow more profound when she learns, only after the event, what she once did not know: that she allowed a doctor to pierce the skull and vacuum the fast developing brain of her unborn child, a child assuming the human form.