Originally Posted by pirl8
I do definitely agree. Even because "Kindle for PC", for example, actually already implements hyphenation, even on mobi6 files. So it seems to me very very silly that they choose not to officially implement it in KF8... Or maybe they had a very good reason, but I can't imagine which.
Just a clarification: The implementation usually happens in the renderer, not in the format.
Although it is possible to give a format specific ways to add hints for a hyphenation algorithm, in general it's not necessary. I'm not sure whether KF8 has any such hinting mechanism.