That's the speculation, another 4 to 6 weeks. Its hardly surprising as the outbreak is accelerating.
Sydney's lockdown is fairly mild. So far its not doing the job of containing the latest wave.
Vaccination rates in Australia are the lowest in the OECD (Take this with a grain of salt, Oz might be in front of NZ, which is not a great boast but least NZ is not completely ballsing up its response to any outbreaks).