I am of opinion that Shipping should start so Pre-Orders get delivered before other retailers like Flipkart.
Good question Dhanesh. I am like one of you who have pre-ordered. Neither belong to Nokia nor paid for :). More like helping friends with what I know (which also means, :( my views are not authorized by Nokia )
My shipment started today evening (from Haryana) and says will be delivered by 1st September (in Chennai).
My order # 14930.
If your hasn't started, wait little. Not sure if it makes difference but I had ordered on 21st August itself in 5 minutes after Pre-Order opened up.
My phone is also shipped last night. i got mail and message with tracking detail and it will be delivered by 1st september.