Earlier this afternoon, I was speaking to someone from Airtel tech team. According to her, the speeds of all plans would be altered - up to a maximum of 1Mbps only. The plans that already have speeds equal to or greater than 1Mbps will be untouched. When I mentioned that many users are experiencing speeds greater than 1Mbps (due to the upgradation works), she flatly denied it. Enjoy the upgraded speeds, though!!