Almost as exciting as an Apple announcement

Rumor has it that Nikon is going to annouce two new DSLR cameras tomorrow, the D3X and the D300.  I've managed to stick with the D70 despite the D70S and the very tempting D200 ... but the 3 series might be too much to pass up.  I just wonder how much these are going to cost and how impossible they will be to get when they come out.