I'm pretty damn sure the SCOTUS can overturn its own decisions, or at least reinterpret it in such a way as to effectively overturn it, Roe vs Wade is not a constitutional amendment, just a ruling of the Supreme Court that has not been challenged by the majority of any Supreme Court we have had to date, a future Supreme Court could choose to challenge it or radically reinterpret it, though.
No challenge, but, yes, it can reinterpret an issue, but not by simply "changing its mind and change its rulings in the future." What is required is that a
different case come before the court involving the
same constitutional issues as an earlier case---an
extremely uncommon event. At that time, and only at that time, the court can review the new case, and if seen in a new light, issue a ruling different than the original one. No new case: no chance of changing an old ruling. Most often
.