BoM going for a measly 5–10 mm with 1° / 5° C here on Wed.
I think it might be more than that. It's a fairly solid westerly stream that's setting itself up. Time will tell I guess. Temps might be marginal for snow at your elevation.
That southerly pulse did in fact make it here. Temp down from 12 to 8 and it's very gloomy. A few weak convective cells have marked the change around Canberra, though there isn't enough heat in the day to make them more significant. This type of day in early spring would result in a surprise storm or two.