Cobra's iRadar has been one of the cooler things you can do with an iPhone for a while. It detects radar gun use from up to several kilometres away, and it syncs the data with data from other users. Now it's tinier and twice as effective.
The Atom is $US200, compared to the $US129 of the non-iPhone-connected version, and doubles the effectiveness of the radar detection in iRadar. Practically, that means going from about 11kmto 16km-17km in the middle of nowhere and up to about 800m to 1.6km in city conditions.
When the Atom comes out in May, it will also be available in a new under-hood model for use by people who either don't want the stigma of using radar detectors (they're actually illegal in all Australian states except for WA) or for people who just don't want it sitting on their dashboards.