I'm hoping it turns out well. I have an RS57 coming (upgrading from the RS4810). I'm hoping to enjoy the improvement in the native contrast alone, but I also want the idynamic iris to be an added bonus and not a useless marketing feature we have to turn off. That preproduction review has caused some concern, but I'm hoping they improved it for the release models.
The observations of those forum members who saw it at CEDIA are helping to to temper that concern, but we really won't know until someone gets a release unit and looks at it. Hopefully we'll be getting some feedback soon.
I was looking forward to finding out for myself tomorrow, but with the shipping delay and then my own holiday travels plans I won't be able to receive delivery of my unit until next Monday.