https://www.abc.net.au/news/2026-11-12/secret-erin-patterson-evidence-remains-suppressed/107376964

In short:

In a partially redacted judgment published online, the Court of Appeal said there was a danger Patterson would face “unfair prejudice” if potential jurors knew about the evidence.

“While the evidence is nuanced and complex, it would be likely to attract very significant publicity with the potential to cause a real and substantial risk of prejudice to any future trial,” Justices Stephen McLeish, Lesley Taylor and Peter Kidd wrote.

For legal reasons, the ABC is unable to report details of what the evidence is but it certainly most amazingly interesting. So we won’t tell you anything more.