Green Car Congress has a piece on the technology too:
Green Car Congress: Fiat Introduces Multiair Electro-Hydraulic Valve-Timing System
Quote:
The first world-wide application of the Multiair technology will be the Fire 1400 cc 16V naturally aspirated and turbocharged engines. The second application will be a new small gasoline engine (SGE - 900 cc twin-cylinder) where the cylinder head design has been specifically optimized for the Multiair actuator integration.
Here again, there will be both a naturally aspirated and a turbocharged version.
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It's worth a read - it's clever technology that keeps the existing cam, but can be over-ridden by the hydraulic component.