I ain't never needed the newest thing bad enough to prepay for anything. Historically, they tend to be letdowns with reliability issues anyway. Cars, airguns, motorcycles, whatever.
If you don't have a warm fuzzy feeling, pull the plug if you can. Buy one later at a better price likely. I'm sure someone will prepay one, lose interest before it gets here, and sell it. Happens all the time. Lot easier and cheaper to back out now then be the guy losing money trying to sell one he isn't happy with.
If I ordered something expecting one thing, and was told I'd get one but it's different, I'd be out. Unless it seemed like an obvious upgrade. That's just me.