The Microsoft Surface Pro 4 is an upgrade from the Pro 3, but it's not perfect.
The Pro 4 is looks almost identical to its predecessor, but it's thinner while still retaining the full-size USB port. The 3K screen is bigger, and with Windows Hello, you can use the camera to log in with your face. The New Type cover is the best Surface keyboard so far, but it's not the most reliable, a.k.a. it doesn't always work like it's supposed to.
It's the first Surface made for Windows 10, so it's still missing some features like browser extensions and Edge. The Wi-Fi connection is also spotty. The Pro 4 is light and super transportable, but if you want to get into the nitty gritty, check out the unboxing video above and read Mashable's review.