Ok, a couple of things.
First, I spoke to my contact working on site at Iloft today and he said that August is the deadline for 100% completion. I would imagine that units on low floors would start moving in before that date, but I'm perplexed by that fact that Ice was asked to sign for that date given the fact that the builder cannot make you move in early. Perhaps Camrost are trying to get as many people to sign for a late date, so they can focus on other suites to get them done early? I can only speculate.
Secondly, regarding the letter Camrost asked Ice to sign. I called my lawyers office today and as I suspected they said do not sign anything without letting my lawyer see it first. As I was only talking to one of the clerks, she wasn't able to give me specific information as to the consequences of refusing to sign.