It almost certainly was a draft majority opinion. It’s too detailed for anything else.
The leak is unprecedented. I’m flabbergasted that a clerk, even a libtard clerk would stoop to these depths. The only reason for such a leak is to try to drum up the goon squad to intimidate a justice into changing their mind.
What this means is that there were at least 5 votes in conference to overturn Roe. The next step would be to circulate opinions. Justices in the majority can and do sometimes change their minds and a majority opinion can turn into a minority one.
This actually happened with Casey in 1992. There were initially 5 votes in conference to overturn Roe. Then O’Connor got cold feet and drafted a new opinion and pulled Kennedy and Souter on her side.
The fact that this draft was leaked means that a liberal clerk is trying to make that happen again.