There was a big 4-page cover ad for the BKK-SYD service with today's Bangkok Post - showing the A340-500 on the front

Inside were some details on the 773ER seats....I just glanced at it but here's what i remember:

F is in a 2-2-2 configuration with lie-flat seats with a shell-like thingy at 80" pitch.

J is in a 2-3-2 configuration with 54" inch pitch in the second cabin (I assume that means between the F cabin and the second row of exit doors) and 60" pitch in the third cabin.