The Air has 16mp m43 sensor. Has tripod mount and physical shutter button.
Information is stored to MicroSD card. All control is made using your smartphone.
Electronic shutter is up to 1/16000s.
It is able to shoot 10fps.
Will have open source API.
Available from 6 March 2015 in Japan.
http://www.steves-digicams.com/camera-reviews/olympus/air/olympus-air-review.html