Apple is working on a new set-top box besides its existing Apple TV, new documents reveal. A regulatory filing made by Comcast and Time Warner Cable to the US Federal Communications Commission pitching their planned merger specifically mentions that Apple is exploring the "development of an Apple set-top box". The filing reads: "Apple tablets are viewing platforms for cable services even while Apple offers an online video service, Apple TV, and explores development of an Apple set-top box." Apple has long been rumoured to be about to update to its Apple TV streaming television box to add the ability to stream broadcast television and channels through specific apps. A report by the Wall Street Journal this year indicated that Apple was working on a set-top box in partnership with American cable companies to offer streaming TV – but that lack of agreement on content licensing was holding up its release.