The next-gen Nano due for launch in two weeks will be the model's first major overhaul since its maiden launch, complete with new gearbox technology, updated interior and exterior looks and styling. Though the company has made several minor tweaks since the Nano's commercial launch in 2009, expectations run high with the new model as Tata Motors' two recent launches have been well received in the market and the Nano is expected to keep the momentum going.