Summary: The Arc is best suited for casual users looking to save on desk space, or perhaps HTPC enthusiasts who are put off by competing products' smartphone-like keyboards and already have a Media Center remote or wireless mouse.
Pros: Driverless, Lightweight and stylish, Familiar layout for touch typists, Low latency, Suitable for gaming, Magnetically-stowed receiver
Cons: Fingerprint magnet, D-pad arrow keys are a pain for text selection, No caps-lock indicator, No Menu key, No media controls except volume, No mouse controls
Excerpt: On February 21st Microsoft is introducing the Arc Keyboard exclusively in BestBuy stores. Like Microsoft’s Arc Mouse, the Arc Keyboard stands out for its design. About the size and weight of a thick magazine, the Arc Keyboard blends inconspicuously into its surroundings. It stores conveniently and maintains a low profile. The Arc Keyboard weighs less than a pound and measures less than an inch thick.
Excerpt: Light And Compact The unusually designed object you see here is one of the latest pointing devices from Microsoft, and it’s called the Arc. The Arc looks something like the Logitech MX Air, but is in fact just another mouse with a different design. The Arc is a wireless mouse that comes with a tiny little Bluetooth dongle which also attches itself neatly to the back. The mouse can fold, very much like the foldable phones we see everyday.
Excerpt: We first saw Microsoft’s Arc keyboard way back in January, at CES , before its eventual release a few months ago. With a light feel and chiclet key style, the Arc keyboard is ideal for those wanting an unobtrusive, wireless keyboard with a small form factor.
Conclusion: I've been a fan of Microsoft's hardware products for a long time. That being said, this keyboard is no exception. It is well made, easy to type on and very attractive. It's not designed for every computing environment. But with the micro-receiver that attaches magnetically to the bottom of the keyboard, and the sleeve for transporting the keyboard with other mobile devices, it makes for a very nice mobile accessory.