Here are official design patent drawings of the all-new 2012 Chevrolet Aveo four-door sedan and five-door hatchback models, filed by General Motors. The next generation of GM's Ford Fiesta rival was teased in concept form with the sporty Aveo RS hatchback study at 2010 Detroit Auto Show in January.

The drawings of the five-door model suggest that the production version follows pretty closely to the RS concept minus of course some snazzy details like the shaved door handles, huge alloy wheels and the more pronounced side sills. The hatchback does keep the concept study's hidden rear door handles that are concealed in the C-pillars. The sedan, on the other hand, gets a more conventional design with the roof-line similar to the larger Cruze.

We're likely to see the production versions of both the sedan and hatchback Aveo making their official debut by the end of this year's auto show season, possibly even at the Paris show in September, with sales following in 2011.