Here's what you need to know this morning.
Nurses strike over staffing ratios
Nurses and midwives will today go on a 24-hour strike as negotiations on staffing ratios continue.
The state's Nurses and Midwives Association (NSWNMA) said the decision was not taken lightly.
NSWNMA secretary Shaye Candish said the strike, which will be the state's third this year, is necessary.
"We need the NSW government to engage in meaningful discussions on introducing safe nursing and midwifery ratios across our state," she said.
Nurses will hold a picket line at Western Sydney's Westmead Hospital, from 7am, with more than a dozen more hospitals taking part across Sydney.
The union said despite the rally, life-preserving services will continue within the state's hospitals.
Not all nurses and midwives at NSW hospitals are members of the union.
Sydney hospital set for major renewal
Plans for the redeveloped Royal Prince Alfred Hospital have been released ahead of the $750 million project.
The state government says it will be the "most significant investment" in the Camperdown-based hospital in its 140-year history.
Health Minister Brad Hazzard said the plans were fast-tracked as part of the government's COVID-19 Recovery Plan and would be delivered a year ahead of schedule.
The designs are on display for feedback.
"Importantly, Health Infrastructure has consulted extensively with clinicians, staff, patients, consumers and the local community, to ensure the redevelopment meets the healthcare needs of the rapidly growing area both now and in the future," Mr Hazzard said.
School group chat referred to police
Police are reviewing the contents of a group chat run by students of an elite Sydney school after messages were exposed in the Daily Telegraph.
Knox Grammar, based on the city's north shore, told parents it had suspended, counselled and asked some students to leave based on "the extent of their participation".
Headmaster Scott James said the nature of the messages were "contrary to the culture and value of Knox" and "unacceptable".
NSW Police confirmed the material was being reviewed by detectives from the Child Abuse and Sex Crimes Squad.
"Police will continue to review activity, make inquiries and will work with the school, parents and the eSafety Commissioner in relation to any matters that arise."
Daily Telegraph journalist Mark Morri wrote that he made the decision to refer the material to police after speaking with experts.
Mr Morri said he did not make the decision "lightly" but had been disturbed by the contents of the chat.
Dawson back in court
Former Sydney teacher Chris Dawson could find out today when he will be sentenced for the murder of his wife Lynette.
Dawson's solicitor Greg Walsh said the 74-year-old maintains his innocence and intends to appeal against his conviction.
Mr Walsh said his client has health issues that include dementia, and problems with his hips and knees.
Dawson is in Silverwater jail and a date for his sentencing hearing has not yet been confirmed.
The matter is listed for mention in the Supreme Court today.
Homicide Squad commander Detective Superintendent Danny Doherty said Dawson's conviction had brought "joy" to Lynette's family and investigators.
He said efforts now turned to recovering Lyn's body.
"Our efforts and inquiries to find Lyn's remains are ongoing, and we once again urge anyone with information which may assist us to get in touch," he said.
"After a journey of more than 40 years, we hope to give Lyn's family the chance to say goodbye."
Rail union negotiations continue
The rail union has said it will continue to negotiate with transport officials today over the long-running train dispute despite the Premier's angry ultimatum to union bosses.
In a bitter escalation in the conflict, Premier Dominic Perrottet told the union to immediately end their industrial action or their enterprise agreement will be torn up and he will drag them before the Fair Work Commission to resolve the dispute.
"This ends today," the Premier said on Wednesday morning.
"I will not have our city grind to a halt, our people inconvenienced anymore by the actions of a union movement that belongs back in the 1970's.
"The union is using our people as political pawns, they're not going to get away with it anymore."
Rail, Tram and Bus Union secretary, Alex Claassens described the threats as "incendiary" and "divisive".
"The Premier and his cronies can make as many empty threats as they like but they will be prevented by the Fair Work Commission from ripping up any enterprise agreement, simple as that."
Rally as shark nets go in
Two beaches on the NSW Central Coast remain closed today after a teenage boy was bitten by a shark while surfing.
The 14-year-old was bitten on the arm at North Avoca Beach at around 7am yesterday morning and was taken to hospital for treatment but later released.
Shark biologists with the Department of Primary Industries said the injuries and indentations on the boy's surfboard suggested it was likely a white shark that was responsible.
The beach does not have shark meshing and a department spokesman told ABC the meshing program at the beach was due to start today.
The restart of the eight-month shark net program has sparked a rally to be held at Manly Beach this morning.
NSW Greens MP and marine spokesperson, Cate Faehrmann, said the nets "indiscriminately kill" marine life and lull swimmers into a "false sense of security".
"We're calling for non-lethal, evidence-based solutions that keep as many people safe as possible while respecting our oceans and all marine life, including sharks," she said.
Central Coast Council said Avoca and North Avoca beach remain closed until further notice.
