The all-new 2012 Porsche Boxster has been officially revealed. It will go on sale mid-year in international markets, and is expected to go on sale in Australia some time in the second-half of the year.

Major changes to the new-generation model include a complete exterior design overhaul with a sharper front end compared with the current model, and a wider rear incorporating a similar lip spoiler design as seen on the 2012 Porsche 911.

The new model comes in two flat-six engine variants, including a base model with a new 2.7-litre unit producing 198kW (up 10kW from the current 2.9-litre), and a revised 3.4-litre flat-six for the Boxster S, producing 235kW (up 7kW). Both variants will be available with a six-speed manual, or Porsche’s PDK double-clutch seven-speed auto.

Acceleration for the new models is slightly quicker than before. The base model sprints from 0-100km/h in 5.7 seconds (down from 5.8), while the Boxster S races to triple figures in 5.0 seconds (down from 5.2).

Fuel economy has been improved for the new model, with the Boxster offering an average fuel consumption rating of 7.7 litres per 100km, and the Boxster S only slightly more thirsty at 8.0L/100km.

The new Boxster has grown compared with the outgoing model, offering a wider track and longer wheelbase, which should translate into a more spacious cabin. A new automatic retracting roof is concealed with a cover in the rear compartment.

Other changes for the new model include a new all-aluminium construction, replacing the current steel layout. Although official figures are yet to be released, overall weight for the new model will almost certainly be lower than the current model (1355kg). The revised chassis is also expected to contribute to the weight savings.

The new model will be officially unveiled at the 2012 Geneva Motor Show in March, with more details, including pricing, expected in the coming weeks.