It seems that Sony is working very hard to capitalize on the growing smart phones market. The latest rumors describe a new device in the form of a lens that will have a built in sensor, battery and memory that attaches to a smart phone and transmits the captured images to the phone via NFC and Wi-Fi. The first unit is rumored to have the sensor and lens from the RX100MII camera (1" sensor and 28-100mm f/1.8-4.9 Zeiss lens).
I really don't know what to think about this product (assuming Sony will really release it). In the past there were similar solutions (see here and here) that were more of a hoax then a real prototype. Maybe Sony took them seriously and developed the idea into a real product? Would you use such integrated lens and attach it to your phone?