This was back in 2006 so I think you are right these would have been the more advanced version of the system
Since 1995 India has been negotiating with Russia regarding purchase of the S-300, in response to Pakistan's deployment of M-11 missiles from China. In 1995 Russian Defense Deputy Minister Kokoshin offered to sell S-300 missiles during his trip to India. Following this offer Indian officials started negotiations with the Russian manufacturers, and in August 1995 the Indian Defense Secretary Nambiar went to Russia to observe tests of the missiles near Moscow. The $1 billion purchase is said to include six S-300 systems, with each combat system consisting of 48 missiles. Reportedly in June 1996 27 S-300 missiles were delivered to India.