Quote: "Low and behold, it’s a Game Creators product but I don’t see a forum devoted to it. "
As has already been said. TGC are a PlayBasic reseller, they didn't write it. PlayBasic is a product of
www.UnderwareDesign.com, which is where you'll find the current 'product' page with links to all the related information. updates, comparisons etc etc. Moreover, there's no forum on TGC because we have our own.
There's lots of information available via TGC forum though, mainly posted on the 2D and Programming boards, plus the odd WIP post. Probably the PBFX thread is the best place to look in terms of what's going on in the PlayBasic world.
WIP thread
The TGC news letter is another place to look.