"The rolling ball is the only thing we have designed so far," he said of the Xindi probe that attacked Earth in the season finale "The Expanse." "Part two is what we are going to start working on, I'd imagine, Wednesday (June 11). But the first thing was a ball with rolling devices on it so that was the only direction we had. So as far as that goes, there's a lot more coming up but for right now, that's all there is."

The episode also featured some additional prequel-era Starfleet vessels, which Eaves says were very nondescript.

"The Starfleet ships were just shapes we came up with - the script just asked for some backup Starfleet vessels so it was just a bunch of shapes we kind of conglomerated together that kind of looked pre-NX-01. And so Rick Berman just picked two out of the five. There's no names, no numbers, or really anything on them."

He also says the recent feature NEMESIS gave him the opportunity to go back and make subtle changes to the Enterprise design.

"The biggest change was the sweep came back in, it was missing on the model - the sweep on the bottom of the belly, and so it has more of a curve on the model, it went flat and so this brought a little more curve to it."

Eaves talks about other ENTERPRISE-era vessels and more about the Enterprise-E in the full interview here.