Kobo, the e-reader and tablet company owned by Rakuten (aka Japan’s answer to Amazon), is today taking the covers off four new devices – three new Android-based Arc tablets and a new Aura e-reader. And it is using the occasion to kick off a redoubled effort to focus on a specific segment in the market – die-hard bookworms – to help itself gain an edge over Amazon and differentiate itself better in the market. Now, in addition to its catalogue of 4 million books, Kobo has built in integrations with Pocket, new reading-focused storefronts (starting with a store for children’s books and one for magazines), and two new Android feautures, a launcher Kobo calls “Reading Life” and a new Reading Mode, both designed to put reading front and center on tablets more than it has ever been done on tablets before.