I installed this:
[ROM] ICS 4.0.3 leak for A200 - Page 2 - Android Forums at AndroidCentral.com
Which is a leaked ROM, but it's been super-stable for the ~20 hours I've had it on there. I just checked for updates and there was nothing, so you most likely got an update on HC that's preparing the way for ICS. It's coming, and based on my experience hopefully it's officially coming soon.