They stated in the live stream that transport rides and woodies will not be in until release. At this time, I actually think that Frontier had an obsession with Steel Coasters since they put all those steel coasters in for testing and feedback but not one single woodie.
Well, the majority of roller coasters in the world (and in previous games) are steel. Also, what about woodies is so important that it would need early alpha feedback, as opposed to post-release feedback for improvements? In these games, the two types of coasters are not all that different. You build them in the exact same way, they have the exact same base features, like stations, brakes, and so on. The only thing I can think of that would need feedback at this stage is the visual rendering of the wooden supports, and perhaps the availability of special pieces. Stuff like sound effects, animations and physics can be based upon the steel coasters, only changed to match woodies. And the whole system of rendering the woodies correctly is probably why they aren't in the game right now, as it takes time to do it right. Of course, this, possibly with the complexity of water rides, may be a reason to justify a delay of the release date, but at this point Frontier appears to be confident that everything will be done by November.