A new 60,000-seat Olympic stadium in inner-city parkland and a rowing venue in a crocodile-inhabited river have been unveiled as part of a major overhaul of planning for the 2032 Brisbane Games.

One person has died and several were injured as flooding rains lash the Australian east coast even though it avoided its first tropical cyclone in 51 years.

A tropical cyclone has weakened to a tropical low weather system as it approaches the Australian east coast city of Brisbane.