What are the specific superannuation rules under the 2017 Budget?

The 2017 federal budget put forward a new pension plan, in which government encourages older homeowners to sell big houses for small houses by allowing them to sell their home a non-concessional superannuation contribution of up to $300,000. What are the specific rules under the plan? If a person needs 650,000 dollars in his/her pension after retirement, how much would he/she earn each year to save the money in the shortest time? The budget also put forward more stricter rules on overseas investors in real estate. Would it still be competitive to invest properties in Australia? Here is the reading of Anthony Li from Wise Figures.

Kay Dolman is one of a growing group of older women who don't have secure housing Source: The Feed/SBS