Apparently so. Mr. F. Douglas Wall was kind enough to stop by UWRPGs and leave a comment, plus I have seen some of his posts on RPG.NET.
I always wondered about “classics” type roleplaying games, such as the Wizard of Oz setting, if it was something that could garner some interest, and it seems to be, from the look of the Adventures in Oz site and Mr. Wall’s blog, here: http://fdouglaswall.blogspot.com/ It seems he’s kept current and posted in it fairly consistently since about April of 08 - much more than I can say for myself.
There are PDFs free for download covering creating characters, the rules and a general summary of everything, available from the main site, here, in Downloads: http://ozrpg.50webs.com/
To me, though I’ve never had more than a passing interest in Wizard of Oz and the like, one main attraction of a game like Adventures in Oz is that (depending on your GM of course), the setting and style, taken from the original books, lend themselves very well to a fancifully optimistic, exploratory type of game, rather than one driven by combat or conquest (the Friends List is quite a neat mechanic), and moreso, AiO is something that one could definitely dig out from a bookshelf for a game with younger players and RPG newbies, and though there are some, and any could be run that way with the right GM and scenario, there aren’t enough games that provide a healthy, well-adjusted and incremental introduction to role-playing.
On the questionable side, the mythos of Oz is much more than we see by watching an hour of Judy Garland wander around in the movie, and the breadth and detail from Baum’s Oz could even be daunting or seen as too arcane and convoluted by some people who just want a pick-up-and-play game, but I dare say if someone’s main gripe would be there is too much material… that’s probably a complaint to be proud of. Secondly, although some people have broad enough horizons that even hack and slashers might find Adventures in Oz a nice change, I would not look for a concept game like this to be something you’d plop down on the table on Saturday night in place of D&D or Call of Cthulhu - but that really isn’t a mark against the game, more the nature of players.
All in all, its an interesting project with a lot of promise and potential for roleplaying sessions in which parents could feel good about their kids’ participation. Who knows, it could even get people interested in reading again, and classics at that! Good luck to Adventures in Oz!