According to Autocar, Toyota sources say the company is eying a larger iQ, possibly with a full-fledged second row of seating. That would move the ultra-compact car out of the fortwo's class, making it a possible competitor for the upcoming VW up! program.
The normal iQ, powered by either of two gasoline engines or a diesel motor, will arrive in Europe in early 2009. Right now, don't look for any version to reach these shores in the near future.
Source: Autocar