Amazon refreshed its line of Fire tablets last night, including a new six-inch model that costs $99 – its cheapest tablet yet. Across its range of Android-based tablets, there are faster processors and better screens, with an additional Fire HD Kids Edition tablet for children. The new devices came as Amazon announced a new feature – Family Library – which is akin to Apple’s new Family Sharing in iOS 8, in that it lets families share digital purchases across their devices. Well, sort of akin: included in Amazon’s scheme are e-books, audiobooks, Prime instant videos, and apps/games from its Appstore. But music downloads from Amazon’s MP3 store are not included, unlike iTunes. Amazon remains a small but growing player in the tablet market: research firm Gartner estimated that it accounted for 4.8% of tablet sales to end users in 2013 – around 9.4m units that year.