I realised: April 10th is a public holiday (Good Friday) as is the Monday after (Easter Monday) so people who are getting it delivered, like me, will get it on Tuesday the 14th not Friday the 10th!
That's not even accounting for delays in shipping due to the health problems.
There was a game last year that released on a public holiday (one where shops were open but Aus Post weren't delivering), and I asked on Amazon's support and they said that it would be given to an appropriate courier and they guarantee that it would arrive on time. So I thought that a private company would deliver it on the day. But then after it was paid for and sent out, the delivery date changed to the next week. I expect a lot of people will be disappointed.