I met a Toyota representative while out on the town this weekend. His job is in the marketing for the Scion brand. I asked him about the new FJ and he says it looks pretty cool and should be shipping in Sept/Oct of this year. There was some earlier discussion to bring it out under the Scion name (scary) but obviously didn't pan out. He also said there is discussion on a full 4-door version.
In non-FJ comments, he said that now that the Tacoma is 'all-grown-up' Toyota no longer has a small truck, so a new one will be coming out and that one will most likely be under the Scion name. It may only be 2x4, however...
Interesting who you can beet on the town! Disclaimer: While I think this guy is reliable (friend of a friend) there was alcohol involved!
--Bill