Google released Android 4.1 Jelly Bean mostly on their $199 Nexus 7 device, which we should hopefully receive a sample of for a review soon, with one of the main features being Project Butter, and Google Now, but there are little things that slip through the cracks in terms of bragging points.
Jelly Bean allows you to share photos and videos through Android Beam via Bluetooth as well as sporting additional options for vision impaired users, and USB audio support. Automatic disabling of background data while using a Wi-Fi SSD that has been designated as a mobile hotspot and an easily accessible Windows-like safe mode. Some nifty features indeed.
At the moment, Android 4.1 Jelly Bean is only officially available on the Samsung Galaxy Nexus and the aforementioned Nexus 7 tablets, but it should slowly be baked onto other devices in the coming months.