What good is a release date if it's not firm anyway? I'd rather not have one promised if there's a chance they can't stick to it.
While it's frustrating I've been waiting for 7.5 (mainly for the initial deployment like window for managed computers) for a long time, I'd also rather not have it at all if it's buggy. Every time I upgrade, something breaks, so the less chance of that happening (at least to something important), the better.