Why I told go for ASUS Motherboards. It's good because most of thing they done are capable and other manufacturer after ASUS discover how. Because it would be funny to look how "Ultra" M.2 and GIGABYTE I don't know how they call them are not capable to support ASUS M.2.
I'm sure same results will get and others.
Now I'm not only sure how many manufacturers connected some of their M.2 slots to lanes CPU.
God helped them to 2700X have 20 PCI-E lanes, 16 use CPU and 4 for M.2.
That mean installing 3700X will increase their speed. God help when someone launch better products then expensive Intel.
Intel didn't want as AMD to delay their upgrades after Skylake... They need just one CPU with 6 cores and one chipset after X99 is launched for mainstream. Because from side of performance improvements they didn't had reason to launch 3-4 chipsets and 3-4 generation. Probably even didn't planned. Problems with 10nm cause to Intel send on market so many revisions of 1151 LGA and Skylake, Kaby Lake, Coffee Lake, Coffee Lake revision...
This news is so much good for people who couldn't afford new motherboards, special because prices of X570.
Now maybe even price of X570 drop. 
 
No way that Intel would allow that. Intel would send direct order to ASUS, ASRock, MSI, GIGABYTE, stop people to install so much powerfull processors (one of them beat i9-9980XE) in old motherboards build for 1800X and 2700X. Like always, new processor, new chipset, new motherboards, even with same socket.
Crucial in this success was decision to AMD launch 2700X with more then 16 PCI-E lanes and leave space to people for at least one system device connected to processor.