Did HTC really fix multitasking?

Hey, Verge-users,

I'm on At&t and currently eligible for an upgrade. My top choices are the HTC One X and the next iPhone, but if the next iPhone isn't seriously compelling or anything, i plan to stick with Android and go with the One X. Unfortunately, I've heard and witnessed firsthand how utterly terrible multitasking is on the One X and it is most definitely a deal breaker. But i heard that At&t released an OTA update that fixed it or at least mitigated how aggressive it was.
Does any of you all have firsthand experience or know whether it was truly fixed or not?

Thanks!