I have bought my mac last month, so I am eligible to get a free upgrade of Mountain Lion. As Apple stated - I have requested for my upgrade and it said you will be notified with your upgrade code. It's been 24+ hours and I have not received any mail from Apple. So, how much time they're taking to send a mail usually?
EDIT - There was some technical issue with the form on saturday. I called Apple Care and they've sent me the codes now.
Thank you all for help. Ak