http://en.miui.com/forum.php?mod=viewthread&tid=428000&page=17#pid10936832
Looks like the update might be released in a day. Here's to hoping.
"Greetings! I understand your concern and I apologize for the inconvenience you have experienced. I would like to inform you that we are rolling out a new update on 7th April. You can install that and update and check, whenever you receive it. Please get in touch with us if you need any further assistance. Regards, Anant Xiaomi Customer Support"
I don't expect the nougat update, because open beta testers also got nougat recently and it takes around 1-2 months to be stable