In which prints should "DFSv2: Second-generation Deep Focus Sharpening for even greater clarity." most visible?
Is it about low DPI images or more general?
It'll be visible in any photos with a lot of fine detail but most visible in tight crops or low res photos that get upsampled during printing. DFS was already quite good so the difference won't be night and day but prints should just seem more crisp in general.
Example: I have an 8 panel 30x20 inch print from my Epson 8550 from a single 8MP photo. That's about 96 PPI that gets upsampled to 600 PPI. You can easily see DFS2 and the new Forge interpolation produce better fine details from normal standing/viewing distance.
Regards,
Mike