OK, so it has been difficult to get any info for the Advanced Tech Package (ATP) users consolidated in one area. Phone: iPhone 4 OS: iOS 5.1 What works: - bluetooth audio streaming works flawlessly. Steering wheel buttons change the tracks and volume. Always connects, very easy to swap between my phone and my wife's phone. - Audio commands when the phone is connected via USB but NOT connected via bluetooth - Cover art works when connected via USB - Track, artist, and album browsing work when connected via USB. Touching the current playing track brings up the next songs in the queue, which is really nice. What doesn't: - Entune in general since the late August app update. Before I could get it to work about half the time when I was plugged in via USB and the phone connected via bluetooth. Now it is a rare, rare case that I can get it to work at all. One thing I noticed is that when the iPod was unable to initialize, the Entune rarely connects. If the iPod, for who knows what reason, actually connects, I have pretty good luck w/ the Entune apps. - iPod feature when bluetooth is turned on. They seem to fight over where the audio is being sent and confuse the phone.