Wow, 41 pages of:
Well, not all of it but A LOT....
My $0.02.
Scion was created by Toyota to bring new customers into the brand as a stepping stone for future Toyota model purchases. When people are saying "Scion ruined the car", you need to get your info straight and say that Toyota ruined the car for the US because Scion is Toyota. The FR-S is the low spec which didn't surprise me at all. Look at all the other Scion models and you should've seen it coming. When was a standard Scion model ever released that had leather, heated seats, dual CC, fogs etc? Ummm....never! Now it does leave the opportunity open for FR-S RS1.0 to have some of those options, because like all other Scion models, it's probably pretty safe to say there will be Release Series of the FR-S as well.
If someone wants all the extra goodies standard as part of the car from the factory, I'm sure your local Subaru dealer would be happy to accommodate you. I just though of this too, what if Toyota is "testing the water" with the low spec Scion version to later release the GT-86 a few years later with more bells & whistles a la JDM version. What was that? Did Toyota just get you to buy a Scion to later move you into a Toyota model?
Fog lights will definitely be a DIO (dealer installed option (accessory)) just like every other Scion model. One or possibly two spoilers will be available too. I'm sure they will also have upgraded wheels available like 18" TRD's if 17's are std. The HU looks identical to the current 12 tC's with BT built in. The other options will be the Alpine unit & Scion Nav. It would be sweet if they made Entune available as a DIO, but wish in one hand and s**t in another; see which fills up first.

I wouldn't be totally surprised to see the LSD as a TRD option as well. The normal carpet floor mats, cargo mat, cargo net, all weather mats will be available. TRD exhaust and CAI will probably be made too.
Price guess: $22,995 including freight. Do I get a cookie if I am right?
Ruskymx
P.S. I bet there's 43 pages now since I'm done typing this...we'll see when I click submit!