Heih brother, why not you read my first post and all keynote about Jelly Bean? The first thing I told is about voice recognition which is now can use offline. It is major improvement for me. About function like Siri, yes they improve a lot. Let's read the keynote. Read from first source, don't just trust forumer post.

I as app developer still waiting Jelly Bean SDK (API 17) availability for download. Just now check the Android SDK Manager, still no Jelly Bean yet.