I'm impatiently waiting myself. I'm also on the NSI team and haven't heard a thing about testing yet either.
All I can think is they're trying to make it as infallible as possible. Listen Neptune's product's aren't perfect and some components are better than others. But if they release something and there's an issue, even if it's user error, they get railed across the net.
I'm no fan boy and if I had the money I might go the GHL route but at this price point, while still not cheap, there's nothing else out there. I've had my problems with Neptune and when one occurs I try to be understanding and communicate with them and try to help them understand the problem. I don't go out and bash them across the net. In the end they've taken care of every issue I've had to my satisfaction, even with things I've bought used and not under warranty. I've had at least 6 boxes go back and forth with them and only paid $30 for one of them, a failed PM1 I bought used.
With the Trident having the ability to do more harm if someone actually doses with its results I'm sure they want to be sure it's perfect before releasing it. But as someone colorblind I'm tired of waiting too.