In October it was announced that the discount card, which entitles holders to a third off train fares for leisure travel, would be going on permanent sale at the end of the year after a successful trial in early 2018 when a limited number were made available and quickly sold out.
All you need to know about the 'millennial railcard'However the launch has now been delayed until 2019 after its administrators realised that it would have gone on sale over a Bank Holiday weekend during the Christmas period.
It will now be available to download on January 2.
The card costs £30 per year and you must have the Railcard app to purchase it - paper copies aren't available.
A Tweet from Railcards said:
"We intended to launch the 26-30 Railcard by the end of the year, given how timings have worked out this would mean launching it over a bank holiday. When the 26-30 Railcard goes on sale we want to be able to provide you with the best possible experience. It will go on sale 2nd Jan."