Super Mario Bros Wonder announced; all new 2D Mario (Update: Out now!)

[Soundwave]

There hasn't been a huge disparity between sales of 2D and 3D Mario games for while now.

3DS
NSMB2 - 13.41 million
Mario 3D Land - 12.87 million

Wii U
NSMBU - 5.82 million
Mario 3D World - 5.89 million

Switch
Mario Odyssey - 25.76 million
NSMBU Deluxe - 15.41 million
Mario 3D World + BF - 11.38 million
Super Mario 3D All-Stars - 9.08 million (limited release)

3D Mario has definitely caught up to 2D Mario in terms of broad popularity.