Recently been able to glean a few interesting details about the new Civic IMA being released in 2006:
Acceleration - 0-100 km/h is 11.3 seconds
Engine power - 116 bhp @ 6000 rpm and 125 lb / ft torque
683 miles per tank of fuel
Only available in CVT

(apparently best way to manage efficiency of engine)
Engine able to close all four cylinders for short periods when cruising, driving on electric alone
A/C is powered by both belt and electric - switches itself between the most efficient choice
Available in new four door saloon body, which is wider and has a more muscular stance than existing model and is almost as big as Accord body.
MPG (American figures) 56 City, 54 Highway (Av. 55) which equals second Prius (60/51/55)
IMHO, I am disappointed it will not be (at least initially) available in the new Euro 5 door Civic shape. I suppose the good news is that the new Civic Hybrid does not thrash the Prius on economy figures so the Insight may survive a little longer.