The S3 will be launched next year. Leica is confident enough to announce it now, although I would question this kind of strategy. Link: Photokina 2018: The Leica S3 | Red Dot Forum But, the spec sheet is quite impressive: - 64Mpx - 3fps - Full frame 4K - Clean ISO 6400 Whats not to like? Clearly, the S system was designed with the future in mind, and 39Mpx was not seen as a fixed specification. Those lenses are expensive for a reason, and part of that reason is excellent performance. You could get that level of performance in a FF35 DSLR, but you'd have to spend the same kind of money (for the most part). FF35 bodies like the D850 are about the same size as the S, but the sensor is smaller. That makes you think a little bit. The A7rIII has a high-res mode that delivers MFD-like quality, although that involves sensor shift. Leica's reasoning for staying with the SLR form factor is that the bigger body allows for better heat dissipation. Perhaps this is not the full story. Leica would have to redesign all of its lenses for a new body, and the current lenses would have to be used with an adapter. Very clunky. I've said it before, but the SL lenses seem to be designed to cover a bigger sensor. Perhaps the S will stay an SLR, and the SL will have the option of a larger sensor. Who knows. Many people prefer OVFs to EVFs, and I understand that. The viewfinders of the S bodies are certainly amazing. But look at how much space the eyepiece takes on the rear of the body. The LCD is restricted in size because of that. The amazing performance of cameras like this is something to behold. And yet, I wonder if the money you'd need to own this system would not be better spent on a medium format film camera, film processor and scanner. Some 645 systems are going for very little money. You can buy a 6x6 folding camera for $50. A film processor will set you back a few thousand. And for most applications an Epson flatbed for under a thousand will do very nicely. Selected frames can be scanned on a Flextight X5 or what have you. With the exception of the X-Trans and Foveon sensors, eliminating the low-pass filter is not necessarily a good idea. Sure, very few people experience problems. Look at the long term reviews of, say, the M9, and you'll find few people complaining about the 'naked' sensor. I'm even more skeptical of cinema cameras that does not utilize a low-pass filter, and that's what the S3 will be when shooting in 4K, after all. But I'm open to being convinced.