The preview pic from the UK Toy Fair showed the Euro Civic in the background although the artwork looked like the US Civic Coupe (possibly the Coupe Si). Can't really tell until better pics are released though. UK Toy Fair Pic: Pic of Euro Civic: US Civic Coupe: US Civic Coupe Si (same as the Coupe but w/ spoiler and more power) Interestingly, there is no coupe version of the Civic in Japan (and Asia and Europe) and the sedan version is different in the US, Europe and Asia. Japanese (Asian) Civic Sedan: US Civic Sedan: Europe Civic Sedan:
More than likely the sedan or the coupe. The hatch is Euro only (not even in Japan). The pictures from UK toyfair do show the hatch as the car which may be confusing, while the robot design indicate a coupe or sedan. Civic Si would tend to indicate the 2door coupe that's available stateside, and it's the US spec model they want to push in the US. Of course, there's a sedan SI planned for next year as well.
If you read the text on that preview pic, it says Civic Si. "Just in time for the release of the new shaped Honda Civic, comes Rumble, the evil Decepticon foot soldier. Rumble transforms into the Civic Si, the street racer's car of choice." -Andy