Chris Minns reveals fate of major new train line Metro West - and punters can say goodbye to one of Australia's oldest racecourses

The NSW government has unveiled a tightly wrapped proposal which could convert a major Sydney racecourse into a new metro station, entertainment precinct and space for up to 25,000 homes, effectively creating a mini city.

Under the plans, Rosehill Racecourse in the city's west will be relocated to other properties owned by the Australian Turf Club (ATC), who approached the government with the idea.

While the ATC will retain the site, funds from the major development are estimate to inject up to $5bn into Sydney's racing industry, including avenues like racing, training and infrastructure facilities, and stabling venues.

More to come.