One of the first interesting observations is that Ice Lake server parts will have a TDP of up to 230W, which is quite a bit more than the up to 205W TDP of Skylake and Cascade Lake. Part of this is due to the inclusion of new features like OmniPath and on-package FPGAs.
We also learn the Ice Lake server platform will offer native eight-channel DDR4 memory support and there's some information about the adoption of a 48V bus. You can learn more at AnandTech.