In 2010 the Queensland Government split the government owned rail operator Queensland Rail into two companies: the government owned passenger operator Queensland Rail and the freight operator QR National (now Aurizon), the latter to be floated in late 2010.
Aurizon was called QR National before it was floated.
There isn't enough information provided to make it clear whether the name change came before it was floated, or after. Without the information, the statement is neither correct nor incorrect. 