Shadowrun 6th Edition Limited Edition - Rules of Play says:

The Sixth Edition Core Rulebook for the Shadowrun Roleplaying Game is a slimmer, faster entry into the dystopian urban fantasy world of Shadowrun. This rulebook has been slimmed down to a sleek 320 pages with amazing new art, and will be expanded upon in coming months and years with a new line of core product. The Limited Edition "carbon fiber" cover for the Shadowrun Roleplaying Game: Sixth Edition Core Rulebook has been slimmed down to a sleek 320 pages with amazing new art, and will be expanded upon in coming months and years with a new line of core product.