How to tell generation of Intel processor of Macs on Apple's website?
I'd check out other resources, such as EveryMac: http://www.everymac.com/systems/apple/macbook_pro/index-macbookpro.html

Although the details aren't there yet, they will be shortly, and they include the full CPU specs you're looking for.

Wikipedia also has details: https://en.wikipedia.org/wiki/MacBook_Pro#Technical_specifications_4

Unclear what their source is though.