https://arstechnica.com/gadgets/2019/04/surface-book-2-line-up-refreshed-with-new-mid-range-option/

Over the weekend, Microsoft refreshed the Surface Book 2 lineup, adding a new mid-range processor option for the 13.5-inch model (via The Verge).

At launch, the Surface Book 2 could be equipped with either a 7th generation dual-core i7-7300U processor with two cores and four threads or an 8th generation i7-8650U with four cores and eight threads, with prices starting at $1,499 for the 7th generation part. That dual-core system now starts at $1,149 (with 8GB RAM and 128GB storage), with the $1,499 slot taken by a new i5-8350U model. This too is a four core/eight thread chip, with clock speeds of 1.7-3.6GHz and 6MB cache, in contrast to the 1.9-4.2GHz and 8MB cache of the top-end i7.