Nintendo of America's Twitter just announced a Direct focused on summer releases for the Wii U and 3DS:
Watch a #NintendoDirectNA about games launching through this summer on 3/3 at 2 p.m. PT. https://t.co/M7Omi1z2OG pic.twitter.com/FMmswF82Ug
— Nintendo of America (@NintendoAmerica) March 2, 2016
If I were a betting man I'd say to expect news on Genei Ibun Roku #FE (SMT x Fire Emblem), and possibly news on Star Fox Zero. With all the rumors of it being delayed, Star Fox Zero may make an appearance as a means of officially revealing the delay to a summer release window.
As for the 3DS, I'd expect more news on the Dragon Quest VII/VIII localizations, and a release date for Sonic Boom: Fire & Ice. There's also that much hated spin-off Metroid Prime: Federation Force, which doesn't have an official release date either.
Of course, I have no idea what will actually be in the Direct, but speculation is half the fun. Let us know what you think will show up in the comments section below.