The 2013 special is to air on the UK's Channel 5 milkshake! on the first day of 2014 as part of the broadcaster's Christmas lineup.
The special's airing will be preceded by festive episodes from the Animated Series with more to be announced.
milkshake! spoke to Roll Along Thomas in October over the non-consistent airing of the 17th Series and its remainder of episodes.
King of the Railway: The Movie marks its UK TV debut on Channel 5 milkshake! on New Years Day at 8:50am.
Thanks to Daniel Coffey for the alert.