Just saw this on the page for the SUICA promotion.
It basically says you need firmware ver. 5.1.0 to be able to use SUICA cards on the Nintendo eShop. Yet... we're at 5.0.0 right now.
Pretty sure that means a new update will be released on Tuesday (or late Monday for US folks), to allow Japanese users to use SUICA cards on the eShop. I actually wouldn't be surprised if the update was Japan-only, as this feature is Japan-only (for now).

It basically says you need firmware ver. 5.1.0 to be able to use SUICA cards on the Nintendo eShop. Yet... we're at 5.0.0 right now.
Pretty sure that means a new update will be released on Tuesday (or late Monday for US folks), to allow Japanese users to use SUICA cards on the eShop. I actually wouldn't be surprised if the update was Japan-only, as this feature is Japan-only (for now).