https://wccftech.com/intel-10nm-tiger-lake-cpus-arrive-desktop-pc-platform-b-series-chips-willow-cove-cores-65w-tdp/

Intel has quietly launched four brand new 10nm Tiger Lake CPUs that are aimed at desktop PC platforms. These are the new 11th Gen Tiger Lake B-Series SKUs that are designed for both, the small form factor and enthusiast gaming PCs.

There are four chips that Intel has listed and all of them are part of the 11th Gen Core family. Intel now has two different desktop lineups as a part of its 11th Gen family, the 14nm Rocket Lake and the 10nm Tiger Lake but there's one crucial difference. The Intel Rocket Lake Desktop CPUs come with support on the LGA 1200 socket whereas the Tiger Lake CPUs come in BGA form factor which means they cannot be upgraded.