The question as asked is quite meaningless. It is possible that Pandora might ship a few hundreds of units to people who are willing to pay for a device a year in advance by going to some deserted cemetery at midnight when the moon is full and leaving the money (and a pint of blood of a virgin goat) under a stone.

The more interesting question is when will I be able to go to a website enter my address and my credit card number, and have the device sent to me. It seems obvious that the N900 will reach that before the Pandora.