Anandtech published an article on Intel Core-B Processors: 8th Gen BGA with 65W TDP
A quote from the article:
During the mêlée of last week and Intel announcing the next wave of 8th Gen Core processors, there were a few products that Intel did not include in the official announcement. The ones that we caught were the Pentium Gold and Celeron desktop product line, but over the weekend we have also noticed that Intel is introducing a new line of ‘B’ processors.Intel Core-B Processors: 8th Gen BGA with 65W TDP
The key features of the B processors are that they are named and perform similarly to the desktop processors the names are based on, but are not designed for socketed desktops: they use BGA mounting, similar to notebook processors. The high-end notebook processors, Core-H, are historically denoted by their 45W TDP, while these new Core-B processors have a 65W TDP. Intel has stated that this is not a ‘new B-series’ of processors, however they do not fall into the standard Core-S desktop definition, nor do they really qualify as notebook processors, siting above the Core-H line in a high-power segment that Intel defines for All-in-One types of systems (monitor with the PC embedded in the back).