https://www.desidime.com/discussions/pre-approved-hdfc-freedom-credit-card-to-millennia?page=1#post_8255058
I would suggest you to directly take millenia whether you have wait a little for that cause if you take freedom and later get an upgrade to millenia than most likely it will be paid upgrade with only first year free but if you can get millenia directly than it will be life time free provided you have to meet some conditions
