The BBC has announced that the upcoming Doctor Who special will be made available in 4K HDR quality through iPlayer.
The episode will be offered live and on catch-up in Ultra HD format as well as the HLG version of HDR to compatible TVs, which are listed on the BBC's website.
Today's Christmas speech from The Queen, as well as upcoming new series Black Narcissus and Perfect Planet, will also be available in UHD and HDR.
"Many factors are taken into account when we're deciding what content to make available in UHD," said a BBC spokesman.
"We've made a range of drama, factual and natural history programmes available for iPlayer viewers to watch in UHD, as well as some of the biggest live events, and we'll continue to look at these as well as other areas as we explore UHD on iPlayer in the future."
Doctor Who airs on BBC One at 6.45pm on New Year's Day.