The release is somewhat vague and refers to both HUD and autoland, and it's not clear to me that HUD is a requirement for what they're introducing. Could it be a case of either/or, so that aircraft without HUD but with autoland may be able to take advantage of the lower minima?
Sydney airport, Melbourne airport and the nation’s top two carriers, Qantas and Virgin, welcomed the new standard
I'm not sure why Virgin would welcome it if it only advantaged their main competitor.