Google Play Books got a nice update last night, with a Read Aloud feature, and pinch-to-zoom and double-tap-to-zoom. The Read Aloud feature sounds really robotic—even more than Siri or other voice command prompts—but it gets the job done. It's nowhere near as polished as something like Amazon's integration with Audible audiobooks, but it's also totally free.
The zoom functions seemed a liiiiittle choppy when we tried it out on a Nexus 4, but nothing too concerning. And they're both better than the Kindle app's features, so hey, no big deal. You can update now from the Play Store. [Google via TalkAndroid]