You need to call customer service and they can tell you if your order is being processed today or if you are delayed Guide: How to find help & contact O2
I ordered on the 11th soon as the announcment finished.
The tracking number is also in the "My orders" section of my o2 account if you go on the my orders page then press your order number in blue (should start with ms-) it should open a new page, then see if you see a tracking number toward the bottom of the delivery information bit. Mine is showing the tracking there now.
Track usage, upgrade and get support with the My O2 appDownload My O2