Currently Being ModeratedFeb 11, 2013 6:55 AM (in response to Francojaviero)
Go to apples website. Estimated shipping times are listed for various models.
Currently Being ModeratedFeb 11, 2013 6:57 AM (in response to Francojaviero)
The Apple Store online lists the estimated delivery dates for each of the models, and is pretty accurate. This is the only source I'm aware of for build-to-order iMacs. So, if it says 4-5 weeks, you can expect a shipping notification sometime before the end of the 5th week.