It's new ( as in previous undisclosed ) evidence.
Such as a thumb drive with all the text messages and whatsapp conversations.
Documentary evidence that the SNP have refused to handover to the inquiry.
Documents relating to the Legal advice the SNP were given.
Documents relating to the Private Secretary.
He made numerous references to these in his testimony.
Either he is playing Poker - Or he, and his Legal team are sitting with a Royal Flush.
If I were Sturgeon - I would be
From the well thought out evidence Salmond gave I'm of the view that the documents he's been prevented from presenting are extremely damning, verifiable and reliable. After yesterday I can't believe he'd slip up on that front.
As said earlier I'm no Salmond fan, but he was a very credible witness and he clearly had faith the documentation he has that the Committee hasn't been allowed to see is relevant and accurate.