There is still some galvanised sheet (pure zinc) produced if that's what you're thinking about (Galvabond I think they call it). I believe it's about 50% more expensive though and doesn't have the same durability. To get a really thick zinc coating for good durability basically is a special order job. It has a larger more irregular spangle than zincalume though and loses it's gloss more quickly so it looks more old school once weathered if that's your bag.
Sorry if that means nothing to our non Australian friends as zincalume, galvabond, custom orb and custom blue orb are just brand names of Lysaghts here. Orb and Blue Orb are quite old brands so it's quite possible the sheet in the picture was indeed Blue Orb Corrugated Steel, but that's a very different beast to the Custom Blue Orb you buy today.