I just flew on a brand new 739 yesterday from MSP to ORD and upon boarding noticed that fresh new smell as well as the sky interior. When I sat in my seat 3A in First class I was looking around for the screens and or audio. None. So when I asked the FA he stated they needed them asap for capacity and when it slows up they will be sending them to have direct TV installed as well as WiFi. Not sure if he had all his facts straight but it seems strange to install as these seats and then have to take them out to install TV's and equipment.
I noticed the 739 was very quiet at least up front and I love the Bins/Sky ceiling! At least my flight was only around 55 minutes.