A JB employee has informed us that this deal is available today (24/12) and Boxing Day (26/12). I rang 13 52 44 to confirm it was on. It should be the same as these 2 deals in November 12/11 & 27/11 BF. Not advertised online.
You can sign up in store, or they should be able to do it over the phone (edit, phone is 26/12 only, but available in store now 24/12, see below). $59/Month for 12 Months = $708.
*Available for New Telstra & Port-in Customers only. Excludes Telstra Pre-Paid, Boost and Belong customers.
Edit: ETC from previous deal and linked CIS is $414.
Edit, appears to be in store 24/12 & 26/12, but over the phone 26/12 only - Thanks mark1237.