The second Mario Kart 8 DLC pack will launch on April 23, Nintendo President Satoru Iwata announced during yesterday's Nintendo Direct. Originally scheduled for a May release, the pack will contain three racers (Isabelle, Villager, and Dry Bowser), four karts, and eight courses.

See the screen capture below for pictures of two of the four new vehicles.



Link: Nintendo Direct - 4.1.15