I believe the developers of construct are still students, so this time of year is probably quite busy for them (exams, essays, etc.). Still, more than two months between releases is quite long.
I feel your frustration too - I'm trying to evaluate it to install on the network at my workplace (a college), but the lack of a v1.0 (or even a new stable release) is going to make it pretty difficult to convince the techs to install it.
You'll just have to be patient and cross your fingers like the rest of us. Sucks, I know.