Effect of new Australian Policy to Slash Number of Immigrants by 15%

Does the new policy to slash immigrants by 15% affect existing visa processing for people who already lodged their visas? The policy also bring new visa types with restriction to live outside big cities for 4 years, before applying PR. Does it reduce the number of 189 slots? , Also does the number of invitations per round also gonna slash?

I think no ways “According to figures from the Department of Home Affairs, in 2017/18 the number of total migrants plunged 46 per cent to 162,417. That’s just 2,417 more than the cap the government has just put in place for 2018/19”