More likely it might conflict with Steve Job's funeral. I would imagine some high ranking Google officials are going to be there to pay their respects.
The funeral takes place today.
Ah. That makes sense if it is so.
I imagine Steve's death might change the tone of an announcement they'd prepared. Something sharply competitive would have been appropriate a few days ago but, yes, would even be distasteful next week.
That's exactly it. A product rollout is a careful public relations exercise. PR interacts strongly with public perception, and public perception is shifting wildly right now. They need to rethink and rework.