Techradar posted a review on the Microsoft Wedge Mobile Keyboard
Along with the Microsoft Wedge Touch Mouse, the Microsoft Wedge Mobile Keyboard has been released in preparation for Windows 8. It doesn't have a design as divisive as the Wedge Touch Mouse, but it complements it with the same black and silver colour scheme.Microsoft Wedge Mobile Keyboard Review
It's a small keyboard - not any longer than most tablets, and so typing on it for long periods can be quite uncomfortable. However the buttons feel good, and it's a huge improvement on using an on-screen keyboard on your tablet.
Again, there's no dongle included, so the tablet or PC you pair it with needs to have Bluetooth. Setting it up was as simple as inserting the batteries, then going to 'Change PC settings' in Windows 8 and clicking Add a device. Windows 8 found the keyboard without trouble, and after entering a unique code on the keyboard for security, everything was pared up.