Well it looks like this will arrive later this year if it follows on from previous releases November. The most important details ye to be reviled are the number of machines that will not be supported.
No worries most of the time most non supported machines going back to 2008 can run the latest system using a tweaked installer file lets hope this continues to be the case with 10.16
A 2010 iMac with an SSD and hacked system running 10.15 Catalina still blows the latest iMac base model out of the water for everyday usage.
So let keep those older Macs going. Now for a bit of a gardening break.........