Tonight's maintenance is only for some 3DS games after all, not Wii U.
Also, NBA maintenance on Thursday.
Also, NBA maintenance on Thursday.
Nintendo 3DS: Nintendo Badge Arcade (all online services)
It will take place on:
North America (EST): April 7th (6AM to 1PM)
North America (PST): April 7th (3AM to 10AM)
Europe: April 7th (12PM to 7PM)
UK: April 7th (11PM to 6PM)
Japan: April 7th (7PM) to April 8th (2AM)