Oh, really, in e-books themselves?
I haven't noticed that so far. In theory, it shouldn't ever be happening on a "Retina"-class screen, but what do I know?
I need to correct myself in terms of the keyboard: app optimization does make a difference even if you use the SwiftKey keyboard instead of the default Apple Keyboard. In a non-optimized app like Marvin,
all keyboards including SwiftKey are obscenely large, whereas in an optimized app (like the Chrome browser), while the layout of the SwiftKey keyboard remains the same (unlike Apple's iPad Pro keyboard, which is radically different from the iPad mini or iPad Air keyboard, in that it practically uses the PC/Mac OS-like hardware keyboard layout), the SwiftKey keyboard's overall size, too, gets decreased dramatically, so you get to see a lot more of your screen content.
OT PS: I hope it's only a matter of time before we get to see more optimized apps for iPad Pro. Currently, it's mostly just the functionally lame "corporate" apps that are optimized. From among my favourite web browsers, none is optimized for iPad Pro at this point: Mercury, Dolphin, Maxthon, let alone the defunct Atomic Web Browser... It's mostly the functionally weak browsers that are optimized: Chrome, Safari, Firefox (brand-new on iOS but functionally lame, of course), Opera Coast. Oh, and the superb Puffin browser appears to be optimized as well, but that's more of an oddity than a regular browser to me (I detest Flash).
