According to kittoo from NeoGAF (linked above) he feels it's pretty much (unofficially) confirmed that Uncharted 2 for PlayStation 3 is going to be set in India.
Below are the related pictures, and here is his reasoning as follows:
In this pic (top left), the truck is shown is of TATA motors. TATA is an Indian truck company and more than half of the trucks in India are manufactured by this company. Also, on the truck, Natraj is written. Its name of an Indian God and is pretty common in India.
A lot of things in this screen (top right) are written in Hindi. The top most red board in right says beer in Hindi. Also the last board in right says 'hastrekha vigyan' which means 'science of palm reading'. The board above it says something in Hindi too but I cant read that.
This pic (bottom left) has one more board in Hindi.
A hindu God in the right picture (bottom right). The statue.
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