A friend of mine called to complain about his 256 kbps Unlimited connection, and they managed to convince him to take the 'Rs. 2000 512 kbps Unlimited' connection - so I guess it does exist. I can confirm in another 4-5 days once they move him to that plan.But I don't think I will go for it. We already get 512kbps at night, and frankly it isn't worth Rs. 2000 per month to get it in the day too. Maximum Rs. 1500, but Rs. 1200 is the optimum price.Hasn't anyone told Airtel that in the telecom world you don't double the price when you double the speed?