Apple promises support as late as the end of the year, only on Snow Leopard, and only on recent Apple products.
About Boot Camp and Windows 7 Apple's Boot Camp users must wait for Windows 7 support - Ars Technica
Apple will support Microsoft Windows 7 (Home Premium, Professional, and Ultimate) with Boot Camp in Mac OS X Snow Leopard before the end of the year. This support will require a software update to Boot Camp.
The following models will not be supported for use with Windows 7 using Boot Camp.
iMac (17-inch, Early 2006)
iMac (17-inch, Late 2006)
iMac (20-inch, Early 2006)
iMac (20-inch, Late 2006)
MacBook Pro (15-inch, Early 2006)
MacBook Pro (17-inch, Late 2006)
MacBook Pro (15-inch, Late 2006)
MacBook Pro (17-inch, Early 2006)
Mac Pro (Mid 2006, Intel Xeon Dual-core 2.66GHz or 3GHz)
So nice to see Apple finally doing something practical
to spoil the Windows 7 parade.