https://phys.org/news/2018-07-apple-issues-bug-slower-macbook.html

The company added in its statement that "customers can expect the new 15-inch MacBook Pro to be up to 70% faster, and the 13-inch MacBook Pro with Touch Bar to be up to 2X faster, as shown in the performance results on our website," the same claims it has made since unveiling the pricey new models.

The two new laptops, the 3-pound 13-inch version with the Touch Bar and the 4-pound 15-inch model with the Touch Bar, cost $1799 and $2399 on up, respectively.