This will prob sound like the worst question ever..
I'm just trying to find out if all this AJAX stuff for PHPBB is available for download or use yet? I'm just working on a forum for the company i'm in and i'd love to impliment it.
If you mean the forum2 implementation - no, that's just a test implementation specific to this forum. I think there may have been other issues regarding to this on wider basis. Take a look at the original blog post where it was introduced - there may be something in the comments.