Maybe. Maybe not. Opinions like this are full of all sorts of nuance and are deliberated significantly. So a final decision will draw all sorts of potential lines to get all in the majority on board.
The biggest apple cart that could be turned over would be for the court to completely advocate this issue to the legislative branch. Bc if Congress can't pass some sort of national law then we're in a free for all states are completely free to set their own limits with no Federal rule above them. And given the stature of our Congress I have zero confidence a national law could get passed. In such a scenario we'd maybe get some states who act like Madagascar (all abortions practically prohibited) and others like a few US states are already (really no practical gestational limits).
Roe's whole "viability" standard was always poorly constructed but it did put a stake in the ground that a state couldn't completely banish abortions. The flip side is it also put the US generally in a position where a state could try to pass a law that allows almost any abortion on the grounds the fetus is not viable outside the womb until it is outside the womb. Neither one of those positions remotely reflect the reality of public opinion as most people recognize the right to choose but do want a "viability" limit.
What we really need is a national law that sets a gestational limit and carves out other exceptions (even countries that ban most abortions still have exceptions for health of the Mom, rape, etc.). That would reflect where public opinion rests.
