This article on Trendforce reports that Intel's new 18A chip manufacturing process achieved yields on only 10% in recent tests. A yield of 10% is far too low to put the process into production, which was planned for next year.

Broadcom, who ran the tests, have now cancelled their orders with Intel, due to the low yields, and is looking for an alternative supplier. Other customers are probably doing the same.

I don't find this news particularly surprising: in recent years Intel has had many problems with their chip foundry processes, and have been consistently behind their competition in introducing new generation CPUs and RAM with smaller geometries (the smaller the geometry of chips, the faster they run, the less power they use, and the more can be packed on a chip). There was a time when Intel led the world, but those times are long over.