BBC to be “digital-first”.The corporation has confirmed that the two channels will stop airing in no less than three years’ time, with content continuing to be produced for its streaming service BBC iPlayer.As part of the shake-up, the BBC’s news channels will be merged into one, while Radio 4 Extra will move off the airwaves and exclusively to BBC Sounds.The BBC said the changes are aimed at “creating a modern, digital-led and streamlined organisation that drives the most value from the licence fee and delivers more for audiences”.The changes will lead to cuts of £200million per year, with job losses of up to 1,000 expected over the next few years.“This is our moment to build a digital-first BBC. Something genuinely new, a Reithian organisation for the digital age, a positive force for the UK and the world,” said director-general Tim Davie.“Independent, impartial, constantly innovating and serving all.