Super Mario Maker update out now (version 1.46 Wii U, version 1.03 3DS)
Nintendo conducted a bit of Super Mario Maker maintenance tonight. That was likely done to pave way for a new update which is out now on both Wii U and 3DS.
On Wii U, Super Mario Maker is at version 1.46. The 3DS version now stands at 1.03. In both cases, Nintendo says: “A number of issues have been fixed to make for a pleasant playing experience.”