I'm guessing the pcie lane situation will be the same as all Coffee Lake CPU's, just 2 more cores available, you can run multiple M.2 drives off the PCH lanes, there should also be bios updates for Z370 boards to be compatible with the new CPU's.

Intel Z390 Express Chipset Diagram . Only interesting feature was USB 3.1 Gen 2 (10Gbps) native support by Z390 PCH.

According to the news Core i9 9900K and other SKUs, Look like Intel so crazy on the compettition from AMD camp a lot.

By Architect inside the chip (i9 9900K and other SKUs) were inferior to our Skylake X skus on many ways such as
- NO AVX512 support at all/- NO Dual FMA 512-bit Unit at all/- No 512-bit bus L1/L2

Something was better compare to Skylake X
- Ringbus Interconnect used bring higher clock System Agent speed. (SA of Coffeelake S Sku could running from 3.3GHz to 4.0GHz+/Mesh other hand 2.4GHz to 3.6-3.8GHz limited)

Big joke from Intel folks that all of us were face off soon

1. You'll see Core i9 7900X perform better than Core i9 9900K first time that i9 -7000 series kick ass i9 9000 series down all apps.

2. Core i9 9000 series cheaper than Core i9 7000 series first time.

3. Core i9 debut from 10/12/14/16 and 18 cores going to be lower spec to 8 cores for what ?

4. Core i9 brand was killing from King of performance to mainstream performance shorty.

5. Maybe they are going to release Core i10 i11 i12............soon.

Good to see Intel return to solder, at least on the very top offering.

I don't think more PCIe lanes are possible if the part is compatible with same LGA1151 socket and same Z370 chipset. PCIe implementation is largely "hardwired" into the mobo layout. So same old CFL-based (and KBL-based and SKL-based) 1x16 or 2x8 or 1x8+2x4 setup for offboard PCIe3 cards, I think.

Another +1 on the solder IHS1! Intel's fancy/cheap plastic goop really held earlier LGA1151 parts down, pretty sad when delid is considered the standard routine to get rated performance instead of the exotic extreme to push beyond it.