When I decided to sell my Nikon dslr (apsc) and buy a mirrorless one I was hesitating between the S5 and the Nikon Z6II. I opted for the Lumix for the price. It also has very interesting features that Nikon has not yet implemented, such as high res shot and the ability to control timelapses on camera, among others. I admit the Z6II is a better camera, but the price for quality Z lenses was too high.
However, what Nikon has done with the Z8 is a master move. Because it offers the features of a Z9 at a price that is $1,500 cheaper and with a smaller and lighter body. Now Sony and its flagship A1 have to compete with the Z9 and Z8 in the market, the cameras that are useful for everything.
I am confident that Panasonic offers a flagship camera (S1II) with a similar approach to the Z9/Z8 and A1. Because everything else already has it. And the evolution of the S5II seems to be going in that direction. And as Paul says, if the new S1II is as good as the Z8 and at a similar price, I'd sell my S1R to buy it.
However, what Nikon has done with the Z8 is a master move. Because it offers the features of a Z9 at a price that is $1,500 cheaper and with a smaller and lighter body. Now Sony and its flagship A1 have to compete with the Z9 and Z8 in the market, the cameras that are useful for everything.
I am confident that Panasonic offers a flagship camera (S1II) with a similar approach to the Z9/Z8 and A1. Because everything else already has it. And the evolution of the S5II seems to be going in that direction. And as Paul says, if the new S1II is as good as the Z8 and at a similar price, I'd sell my S1R to buy it.