General Motors is planning a number of events to mark its centenary this month, including a formal celebration later this month at its headquarters in Detroit. In the lead up to the date GM has released a number of teaser shots and more details for the production version of its Chevrolet Volt plug-in hybrid and a new report claims the car will be shown to the public for the first time on the 16th.

Speaking with Automotive News Europe, an inside source said “rumors that a production version of the Volt will show up at the celebrations are true.” GM’s product czar Bob Lutz also revealed back at the London Motor Show in July that the Volt would be unveiled this fall, but not at October’s Paris Motor Show.

Last month GM released the first official teasers for the production Volt, revealing a much smoother and more aerodynamic shape than the original concept car. The car’s design director Bob Boniface also revealed more details about its aerodynamic modifications in the video below.

According to Boniface some of the key changes from the concept include a rounded and flush front fascia, tapered corners and closed grille, all of which are designed with an eye to moving the air around the car more efficiently while maintaining the ‘look’ of the Volt.

Bob Lutz, meanwhile, previously revealed that test fleets for the production Volt would start running as early as next year and that the first customer cars could start rolling of assembly lines earlier than the proposed November 2010 release date. In the meantime, click here to see shots of the car on the set of the Transformers 2 movie.