So NEO 2 will be limited to the same ports. So it won't be much of an upgrade then I guess.Well even the A19 Pro only supports a single USB 3 port so Apple will have to use a third party controller with it just like they are with the S18 Pro.
The way to get around that is to use binned M chips or a totally new design (which doesn't make financial sense) or keep using the A series with a third party controller for the second port.