my idea would be, 3-4 weeks.
but then again, it depends on who's working on it, for every phone someone else needs to build a CM9, when this is done, they can build a MIUI version for it
Just curious about what kind of features will be coming to MIUI with the ICS UI changes. Will be we seeing portrait launcher natively? Things like the swipe actions? resizable widgets? Not rushing you guys, just wondering