I use text-to-speech sometimes to have my Kindle read to me, and I love it. But sometimes I use it with the volume down just so it'll turn the pages for me, and it reads much slower than I do. By any chance does the 2.5 update offer more reading speeds?
Even if books don't have TTS, I wish the Kindle still had a page-turning option. (It's not that I'm THAT lazy, but I read when I'm on the treadmill or doing other things with my hands.)
I use TTS daily, and it hasn't changed with 2.5. Well, it's a bit quieter, but the reading speed hasn't changed.
Love TTS while walking the dogs, on the treadmill, making breakfast, putting on makeup, doing my hair, dressing, in the car, doing the dishes.... etc. I've gotten used to the voice and love the convinience of going back and forth between reading and being read to, which you can't do with an audio book.