Shame? I don't think so. At least I hope not...otherwise I'm screwed.
I know I'm saving up for a new bike and fairly certain it won't be a 26". I'll decide on the wheel size when I've tried out a bunch of prospective bikes. Hopefully some shops get some in soon. You got any Giant dealers near you? They ought to get some 27.5's in soon so you could at least get a feel for the wheel size.