Qantas Airways announced that they will be replacing their 767-338ERs with their A330s, beginning on September 14th. Their A330s serving HNL from SYD will be a mix between their -200 and -300 series, depending on passenger traffic demands. With either A330 variant, it will be a capacity increase from the 229 seats in their 767s. The airline is also looking to up its frequency from three weekly flights to four in December.
Further details in this Qantas Group press release.