I thought Natal is releasing 4th quarter and PS3 wand the 3rd quarter :S
I thing the pushing back of its release can be argued both ways:
Pros- more time to have a better line up at launch, less competition from big games such as gow3, heavy rain, mag, dante's inferno, gt5, bioshock2 etc, will be released at a time when families shop for children (for xmas) and it may still be released before Natal.
Cons: may get released at sametime as Natal and get its ass whooped lol