Xanthos - DakkaDakka
According to the designers of the terrain, this is only the very first wave of it. I actually asked about terrain options and the guy told me that they have designs for steeples, proper roofs, and other stuff too. But getting stuff tooled for plastic is always about priorities. And first priority was the three main Titans, and the knights.
As for the guns on the Warlord, sprue constraints meant that they had to choose between two more guns or four extra shoulder plates for different designs.
Most of the remaining weapons, as well as some new ones, are apparently already tooled. They will be out at a later date, either as a clampack or (more likely) in resin upgrade sets.
I couldn't get a straight answer out of them, when it got to whether the cerastus types or the porphyrion would be plastic or if they would remain in the realm of resin.
They did say that they are aware that many people won't get the resin stuff, whether from difficulty of buying or working with it, so they want to make as much as they can from plastic.
[..]
Oh, and interestingly, the two smaller Titans were merry hell to convert into CG designs, since they were originally handmade, with the minimal casting and mastering faults that this brings. So the designer set about the job with callipers and measuring tape, and slowly but surely converted everything into CG.
The difficulty of this task, is also why the Warhound is last in line, and wasn't ready to show off at the event.
One guy did all the designs for the Titans and Knights. I remembered to congratulate him on a bl**dy good job at the event! ;-)