The Gen 4 remakes recently had their eShop pages updated, with details emerging on how much storage space you'll need for each of them.
During yesterday’s Pokemon Presents, we finally got long-awaited gameplay deep dives for the upcoming Pokemon Brilliant Diamond and Shining Pearl and Pokemon Legends: Arceus, while other details on the games have also begun emerging since then. In addition to the Switch eShop detailing the storage space requirement for the latter, the same information has also become available for the upcoming Gen 4 remakes.
According to the North American eShop pages of Pokemon Brilliant Diamond and Shining Pearl, each game will require 10 GB of free storage space on your Switch (which is about 2.5 GB less than 2019’s Pokemon Sword and Shield). The pages do mention that this is an estimate, but the figure should probably remain in that ballpark. With not too long to go until the duo’s launch, there might be some updates coming at or around launch, but it seems the bulk of development work has been done.
Pokemon Brilliant Diamond and Shining Pearl are launching for the Switch on November 19. A couple of weeks before that on November 5, Nintendo is also releasing a Switch Lite Dialga and Palkia Edition.