The community forum is about the closest to TGC as you'll get and we do have a lot of posts...
The fact that there's very little X10 activity though is TGC's fault...there's no activity on their side, and the community has done just about all it can with X10 in the state that it's in...there's not much else we can do until the migration's done. Plus, there are a bunch of X10 features that either don't work or work poorly. Some of them we don't even know if they work..
Personally, I haven't been very active lately due to the fact that the Unity Engine is a whole lot more interesting and flexible (I'm not the only X10 user drifting towards the Unity camp either...). I've been making loads of media lately, it's just not worth my time going through the effort of getting it fpsc-ready. For those interested in checking it out, [href]www.unity3d.com[/href]
Basically, the reason the X10 forums are so dead is because there's not much left to talk about. Asides from the occasional question about how to do something that is.
The only new thing until the migration will be having the store integrated into X10. Yay. Personally, I think that move will be a failure and won't bring in much revenue to TGC. Why? Because X10 users are tired. There's no X10-only media on the forums, or very little. (The community forum store is the closest it gets). There's not much point wasting money on software that that's being ignored; it's a bad investment. TGC is ignoring X10 and that is why it's failing as a product and why the community is shriveling up.
There's also the fact that it and any games made with it only run on Vista w/DX10 gpu. Seriously? There's not a single program that I know of that is Vista only with no backwards compatibility. It's a stupid move, especially from a business standpoint. X10 games can only be played by X10 users. So how can making an X10 game possibly be profitable? Even as a hobby, it will only be enjoyed by a limited selection.
TGC may give the excuse that there aren't a lot of X10 users, but that's their own fault; their neglect of it is what is turning users off. Many users are now actively searching for alternative engines. It's not that they want to, but TGC leaving them no choice. Based on the ads you'd think X10 is the ideal indie developer engine, perfect for making half-decent games with good graphics, but sadly it's not. Not with the lack of regular updates anyways.
A while ago during the 1.09 beta, I think I mentioned somewhere that it was great we were finally getting updates but that I was worried TGC was only doing it because X10 users were making a lot of noise; throw them a bone so TGC could go back to what they were doing before. Seems like that's how it turned out after all.
Based on it's history, TGC appears to have no intention of supporting X10, only enough to keep users from making too much noise. It's not about getting an update here and there, it's about getting a constant stream of updates. Even if they're small updates that fix a bug here and there, it's better than being ignored for a year.