No, there aren't.
And they're not some kind of "awesome community" or anything... they're primarily support forums, and while you will occasionally see some neat ideas bouncing around, there's no space for general or off-topic discussion like in the C9 Coffeehouse (it's clearly segmented into different topic areas).
The software is decent, and they've got some neat features in their rich text editor that I'd like to see on other sites (one specific feature I like: marking something as a code snippet immediately reformats the section as code (they don't do syntax highlighting, though) rather than just marking it with [code][/code] like most forums). Can't say much about stability, though: haven't spent much time there or written many posts.
Can't give you any screenshots or anything of that sort, as there's some NDA'd information floating around there (stupid NDA on prerelease iPhone software...

)
OT: is your avatar wearing a Scotland shirt?