Actually, I was refering to the Eberron article on the Umbragen by Baker (even if you don't love Eberron, it had some great warlock material in it). Apparently, there was also some in the Far Realms article that I had forgotten about.
To keep myself on topic, I would likely purchase a Far Realms book sight unseen. Though, I would prefer, as has been mentioned by many, that it not be "over-detailed." I think that is completely doable, too. You could treat it like Xendrik (excuse the Eberron reference please) and just talk about portions of it with the majority left untouched. The bulk of the work could simply be about how the Far Realms affects the rest of the multiverse: expand the Dragon article; *anything* more on the kaorti; hell, bring the quori to the masses -- there's so much that could be done without demystifying the place, IMO.
And they will call it, "At the Planes of Madness." ^_^