As reported by The Next Web, Apple’s iPhone 4S is set to launch in India on Friday, November 25. Indian carrier Aircel has confirmed that it will begin selling the device next week, whereas another major operator in India, Airtel, is rumored to be joining sales on the 25th as well. Airtel and Aircel brought the iPhone 4 to India only in May, almost a year after the original US release, and this November launch seems to signal Apple’s intention to have a rapid rollout for the iPhone 4S in more than 70 countries before the end of 2011.

Prices for the iPhone 4S in India haven’t been confirmed by the carriers, but The Next Web suggests the 16 GB model will be priced between ₹ 35,000 and ₹ 40,000, with additional price drops for the iPhone 4 and 3GS.

Based on the latter’s launch and the fact that the unlocked iPhone 4S starts at $649 in the USA, however, we expect to see the iPhone 4S to be priced somewhere between ₹ 35,000 and ₹ 40,000 for the 16GB model and offered carrier unlocked with a reverse subsidy. This would mean that customers would pay the full price of the phone upfront and then be reimbursed part of the cost in the form of discounted tariffs for the next two years of usage.

We also expect to see both carriers drop the prices of the iPhone 4 and iPhone 3GS—which currently retail at ₹ 34,500 and ₹ 19,990 respectively—after the launch of the iPhone 4S.

As of today, the iPhone 4S is available in 44 countries around the world: the device launched in 7 initial countries on October 14th; 22 countries followed on October 28th, and last week (on November 11th) the iPhone 4S launched in 15 more countries including Hong Kong and South Korea. On November 11, Apple also started selling unlocked iPhone 4S units in the United States.