[Brightcolours]

Pure speculation: maybe you get lossy compressed 14 bit output now, instead of the lossy 11 bit? Personally I prefer lossless compression over totally uncompressed to save on a bit of storage space.

 

Edit: reading the interview at image-resource does imply it is now 14 bit lossy compressed. So more bit depth, but still lossy.

Sony always has claimed its RAW is 14 bits, when it is 11bits something compressed with problematic artefacts. So, it seems that it still has the problematic same compressed format, but that they will consider uncompressed 14 bits RAW when "enough customers ask for it", with no date in sight for firmware update.

 

Not sure why Sony does not offer lossless compressed RAW like Canon/Nikon.