We have a variety of feedback mechanisms available for technology previews on Autodesk Labs.
Please continue to use them. For the next two weeks our replies might be a little slower than normal. This is the time of year we refer to as "the week of rest" where we take some time off to spend with our families. Fear not, we'll all be back at work on Wednesday, January 2, 2013.
Time off is alive in the lab.