The sad thing is though (and I hate to be a negative nancy about this), but, wouldn't the books in there be only about the First and not the Source? Thus although it would be useful for lore sprinklings for the new world we find ourselves in, it will do little to help explain lore about the Source we're still asking for.

I guess I'm still just disappointed they're not adding it to the original zones and instead an expansion zone that isn't even the 'real' setting.