News Intel Announces Socketed 56-Core Cooper Lake Processors

Isn't Intel expected to utilize the LGA 4189 socket for Cooper Lake, also offering compatibility with both Cooper Lake and the company's future Ice Lake processors ??
 
This will reveal my ignorance, but how does one cool a 400W processor? I'm thinking that some sort of massive copper block with large volumes of refrigerated water might just do it. I can't imagine any sort of air cooling doing the job.
Well, if you can cool a 2-slot 275 W GPU with a single blower, then attaching a taller heatsink via a vapor chamber might work.

I've long thought it'd be cool if they used a vapor chamber as the actual heatspreader, integrated into the packaging.

The other thing to consider is that water cooling is becoming more common, in high-performance servers. And consider that water cooling a GPU dissipating 400 W is nothing new or particularly hard.