If you're in the exclusive group who'd really like a Microsoft Surface but refuse to give Microsoft money, Samsung has your product. The Galaxy Book is a Windows 10 detachable that comes in 10.6" and 12" sizes. The smaller tablet comes with a Core m3 processor and 4GB of memory, while the larger portable is a more direct Surface Pro competitor with a Core i5 processor.
Samsung is coy about the specific CPUs it's using inside the Book, but it does mention some clock rates for the "7th-Generation" chips. That leads us to suspect that the 10.6" tablet's Core m3 is the Core m3-7Y30, while the 12" model's Core i5 is probably the Core i5-7200U. Both chips are dual-core Kaby Lake-family processors with Hyper-Threading. Either chip should more than suffice for typical tablet use, although we're curious how high the mobile i5 can Turbo in such a thin form factor.
With the 10.6" tablet, you have two options: a model with 4GB of memory and 64GB of internal storage, or a second model that bumps the storage to 128GB. Otherwise, both are identical. In case 128GB isn't enough storage, you can expand the internal storage by up to 256GB using a microSD card. The display on the 10.6" Galaxy Book is a Super AMOLED unit with a 1920x1280 resolution, and its 3:2 aspect ratio should be familiar from other, similar devices.
The larger tablet can be had with 4GB or 8GB of memory, and 128GB or 256GB of solid-state storage. It too has a microSD slot, and its 12" Super AMOLED screen has a 2160x1440 resolution. It gains a 13-megapixel rear camera on top of the single front shooter it shares with its little brother. It also gains an optional cellular modem that can be used with Verizon's service in the US.
Whichever one you choose, the Galaxy Book hooks up to other devices using 802.11ac Wi-Fi, Bluetooth 4.1, or a multi-purpose USB 3.1 Type-C connection. The larger tablet gets a second Type-C port, and both have a regular old 3.5mm headphone jack. You also get an S Pen digitizer, a folding keyboard cover, and a power adapter that Samsung says can charge the machines in "less than three hours."
The Galaxy Book isn't available quite yet, but Samsung has pre-order pages up on its website. The top-end 12" model with 8GB of memory and 256GB of storage will set you back $1330. Halving the memory and the storage puts you at $1130, although adding the Verizon modem to that model brings you back to $1300. The 10.6" Galaxy Book with 128GB of storage is just $730, and the baseline model with 64GB of storage is $630. Samsung's offering free accessories (like USB-C multi-port adapters) with pre-orders, so if you think you might want one, now may be the time to pounce. Samsung expects pre-orders to go out in "late May."