Go and do a dummy booking on the SQ website
Thanks, I checked that out and you are right, SQ246 is showing up in seat selection as 777-200ER (Refitted), so it is the 1-2-1 config.
Back to my original question, It would seem then that the seats on this flight are the same as on the A380 out of MEL?
https://www.singaporeair.com/en_UK/au/flying-withus/cabins/business-class/business-class/