A few observations, to add to what Richard said:
1. Some of this is the nature of the beast with elmotos right now. All the major elmoto manufacturers are startups, and have limited resources, and as demand starts to increase they have to focus somewhere. However, since demand is not that high, elmotos for various reasons generally only appeal to those who have more-than-average passion about them in the first place, and the elmoto manufacturers are throwing all their resources into making and shipping bikes, the dealer network is not that large. This unfortunately creates a chicken-and-egg problem as this situation is not exactly something that's going to convince the more mainstream bike buyer to go electric.
2. I bought through a dealer, which I had to drive 200 miles to get to. However, prior to that I showed up unannounced at Zero's HQ in Scotts Valley, and they rolled a model (behind movie-theater rope) off the office lobby floor, gave me a helmet and gloves, and let me take it for a spin. So while I don't have the past experience with Zero that you do, they seem to be trying to me.
3. Pre-announcing their 2013 products and specs would severely cannibalize their 2012 sales if nothing else. I don't blame them for not doing it. Look at Apple's last quarter: no one knows what the iPhone 5 will be, but they know it's coming real soon now, and their iPhone 4S sales were adversely affected as a result. When you're not in the black yet, you tend to avoid shooting yourself in the foot financially.