The fact that we've only seen two new ships doesn't necessarily mean there are only two new ships. Firstly, they're only being used by NPCs, so whether they're used at all is a setting on the server so it's possible that someone forgot to turn them off, or FDEv "oops did I do that" to generate some hype. Secondly, we know that next week there's going to be a new beta client with entirely new code in it - the new mining stuff. So it's entirely possible that in week 3 of the beta we'll get another build with more than the two we've seen so far. Or I'm being hopelessly optimistic and it's always been just two. We'll know in a few days.