In a move that should have really happened sooner rather than later, Microsoft is giving buyers of their Surface RT ARM processor-powered tablet free Touch or Type Covers with their purchase. As reported by Cnet, US and Canadian Surface RT buyers who add the keyboards to their orders will not have to pay for them starting May 31. While they indicate a limited time offer, the promo could go on for around a month as per Microsoft's Surface blog. My advice, go for the Type Cover.
Source: Cnet