Found this deal via Finder.com, seems NAB are adding an extra 5 months to the length of the BT deal and removing the 2% BT fee if applying through the Finder link.
Exclusive offer to Finder.com.au.
No Balance Transfer fee. BT reverts to cash advance rate. NAB may vary or end this offer at any time. Minimum monthly repayments are required.
44 days interest free.
Aren't most 55 now?