Came across this recently, about time Wikipedia updated their website with Subaru BRZ information! Here's what they have so far on the BRZ:
The Subaru BRZ is a compact 2+2 car sold by Subaru and manufactured by Fuji Heavy Industries and Toyota Motor Corporation as a joint effort. The BRZ is set to be available in production form in Spring of 2012. It is a front engine rear-wheel drive car. It is the second FR car from Subaru with the first actually being Subaru's first car ever, the Subaru 1500. The car will be powered by a Naturally Aspirated 2.0L Flat-4 Boxer engine from Subaru that includes the D4S direct injection system from Toyota. In the USA, the car will be available as both a Subaru and a Scion expecting only minor differences in the front fascia.