I want him but I am okay if he doesn't come with the castle (which looks to be the case) since I'm sure we'll gett him separately somehow. Nobody mentioned this but wouldn't it be cool if the "astronaut" came out as a suit of armor that you could put on some of your other classics figures. If they went with this route then it could be included in another weapons pak set.
If this doesn't come with the castle then who knows it might come with Snake Mountain since as some people have stated it doesn't seem to fit with Castle Grayskull.
This is something I would assume would come with the castle, especially if they don't include the torture rack.