based on what they are known for doing.. i can say:
Corolla Indus (1993-2002) 9 years, rear light variations=3
average 1 variation last for 3 years...
This Corolla (2002 onwards) rear light changed after 3 years in 2005, this one has got 1 more year to go, after this there would be another change in the rear light...
THEN WE MIGHT SEE A NEW COROLLA SHAPE HERE