I'm sure everyone is reporting that the apps still work, but did you know that you can still download them? I was able to delete and redownload my Kindle app, also and I also downloaded new stuff.
I've tried and successfully downloaded several reading apps, including the BAM Reader (from Books-a-Million) and others. None of the apps I tried had been changed to comply with Apple's rules, and that makes little sense. It's clear that Apple did something to change the deadline, conditions, or something. I'm still waiting on my sources to get back to me.