Are the days of the 4" screen numbered?

I noticed that the pages of the iPhone 5S and 5C don't mention anymore they retina screen in a separate paragraph. Nothing in the design page. It's gone. The page "why iPhone" that was promoting the retina screen along with the one hand use has disappeared as well.

Many people still believe that 4" is an ideal form factor. For me, I Iike both 4 and 5" devices. I just hope Apple will diversify the iPhone lineup à la iPad: an iPhone mini, an iPhone air, an iPhone whatever it's called, ...

Will people look for another device if Apple discontinues the 4" screen?