I'd love to see some side by side comparisons.
If I thought there was meaningful differences, and just as importantly ones that can be achieved in real world location conditions, then I'd dig deep and upgrade from a P25 to a P45.
But where as I expect there will be a moderate increase in the general smoothness and tonality of the shot, I'm sceptical that I'll see resolution differences in reproduction up to A3/A3+ sizes from Rodenstock Apo-Sironar Digital lenses when used with fairly extensive movements, or from a Hasselblad V series.
However, I've an open mind, and a practical demonstration that proves the contrary would convince me. I'll watch the LL review closely, especially with the larger image circle 55mm lens.