I just called amazon:

"The customer service rep said that the item is on pre-order and they do not have the information on when it would be shipped."

I said that i was leaving the country soon and i needed a date so that i can decide whether to cancel this order or to order directly from nokia. So she transferred me to the cell phones department where i talked to another lady and she repeated the same. I again reiterated my problem and said that any information if available would be hugely helpful for me. She said she was very sorry as they did not have any information at all to give me.

So amazon does not know when they will get the n900's from nokia.