[Nepsotic]

Well, it's a long process. When you're so early in development, pretty much everything could be different by the time you ship, so it really doesn't make sense to show anything publicly yet.
That being said, the name of this thread indicates that it will actually contain information about what it says it will. I mean, it should've just been a blog called "I played SoulStorm and it was really good". So this is why many people are frustrated where they previously wouldn't have been.

There's also another point, the fact that OWI have a really good track record of broken promises. You could say that by not showing anything you're managing expectations well which is true for the most part. Lorne would always get ahead of himself in the past and show too much, and then info would just fizzle out as they silently dropped the project.
I think this reinforces a paranoia that hardcore Oddworld fans have in general that this could happen to any Oddworld project.

So when you take into account all these factors, I totally get why people see this thread as a dick move. As a fan, it's easy to see where people are coming from.