http://www.pcgamer.com/razer-updates-its-blade-stealth-gaming-laptop-and-external-graphics-enclosure/

Razer's thin and light Blade Stealth laptop now comes with a bit more power for multitasking and multi-threaded workloads, as it's been upgraded with an 8th generation Core i7-8550U mobile processor based on Intel's newest Coffee Lake architecture. The Core i7-8550U is a 4-core/12-thread chip clocked at 1.8GHz to 4GHz, with 8MB of cache and a 25W TDP.

This is an upgrade over the 7th generation dual-core processor options (Core i7-7200U and Core i7-7500U) that previously resided inside the Stealth Blade. In addition to a bit more performance, Razer is touting improved battery life, which it now rates at up to 10 hours. That's 2 hours more than before, at least on paper.