The offical launch should be today or tomorrow and it's supposed to be abailable by late Sept. MSRP with the 17-85 kit lens is $1599 and it's expected to sell between $1300-1400. Here's a site which shows most of it's specs. There will be 2 new ef-s lens introduced as well.
http://www.sdcard.be/Nederlands/store/viewitem.asp?idproduct=8979348 Note Canon has raised the burst rate to 5 fps with a 25 frame buffer and increased the number of focus points to 9 but I still wouldn't expect this body to be anywhere near as fast as the 1 series.