It should be remembered that for Roe v Wade to be "overturned," (the court can't arbitrarily overturn a former judgement) a similar case has to come before the Supremes. The only way I can think for that to happen is for a state to pass an anti-abortion law, have a woman or women challenge it's constitutionality again, and then have the case so all the way to the US Supreme Court -- where the state law has to be upheld.