Despite its raging success, one of the major flaws of the Nintendo Switch is its general capacity. Though there were supposed to be game cards with double the size coming out sometime this year, it looks like we won't be seeing them for a while yet.
The Wall Street Journal launched its report last week, noting that though Ninty had expected to start rolling out the cards in Q3/4 of 2018, developers will have to wait to 2019 to get their hands on them.
This isn't a huge deal on the outside since a good number of Switch games sit comfortably within the 32 GB limit, but it's becoming more common from third-party publishers to struggle fitting their games in the space.
Games such as NBA 2K18 and Doom are among the few that require an external download as well as the use of the game card. Since the Switch itself only has a 32 GB internal memory - 28(ish) GB once the system software settles - you'll more than likely have to pick up a micro SD card to fill in the gaps. But then, this isn't really news to Switch-users.
According to MCV the delay could be down to technical issues, though of what manner we're uncertain. We'll just have to wait for more information to find out.