Yes, it is still the Qantas First lounge for BA F pax. I passed through in spring and found it to be a really excellent lounge with top notch food. You'd do well to eat there since whatever the menu, food on the ground will be better than in the air.
My recollection is that food ex-SIN was better than ex-SYD, but that might have been menu-related. However, if you are indeed travelling 'soon' then email YouFirst and ask them to forward the menus for your flights so that you can plan ahead.
Whatever you eat, enjoy the trip - a whole day in an F cabin makes for quite a bit of chill-time!