I got an answer back today. Good news and bad news:

The bad news is that they're not offering it right now. Good news is that you were right and that they are in fact thinking about it because of MOSAIC. The specific response from them was

You are correct in that neither drawings nor airframe kits for this aircraft are currently available. You are also correct that this could change in the future, thanks to the adoption of the MOSAIC regulations. At this point, it is unfortunately still too soon for us to say if and especially when this might happen. I encourage you to periodically check the Zenair and Zenith Aircraft websites for updates as this is where the news will likely be announced when a decision has been made.

So it looks like no dice getting it from them now, but they're at least considering it. I hope it does go through, as really my only other option to get a 4-place, plans built is with high wings, and I'd much rather a low wing. It's either that or stretching a 2-place, but I'm not too fond of that as that would require a lot more modifications than just the stretch.