The number of pages left in a chapter still appears for me, but only when I bring up the menu from the bottom. It’s a bit awkward, but at least it’s still there.
Since this is the first beta, I’m hoping we’ll at least see some small refinements before the final release. Like others, I also really miss the page turning animation, which showed brilliant attention to design details, right down to see the text through the back of the page. To be honest, I’m surprised it survived the iOS 7 war on skeuomorphism, but after eight more major iOS releases it seemed it was going to stick around.