Let the speculation end: The 2012 Hyundai Veloster will have three conventional forward-hinged doors. We also know the Veloster will have a direct-injected engine (we're pretty sure it will displace 1.6 liters), an available dual-clutch gearbox, hit an estimated 40 miles per gallon and will come with Bluetooth connectivity.
Also, note the split rear glass of the open rear hatchback, a similar arrangement to the Toyota Prius and Honda CR-Z, among others. Clearly, Hyundai hasn't spilled all its beans just yet, so we'll just have to wait until the start of the Detroit Auto Show this Monday, January 10 for the full reveal. In the meantime, feel free to continue the speculation in Comments.