ULTRA

ULTRA is a series of Nerf blasters that was released on October 1st, 2019.

Details
ULTRA is a line of dart blasters that fire ULTRA Darts, a new aerodynamic type of ammunition.

History
ULTRA was first leaked in early 2019, with Brickseek listings for the ONE and the twenty-piece ULTRA Dart Refill. Later that year, in September, an image for the ONE was leaked. Shortly after the ONE was leaked, Nerf officially posted a teaser trailer for it. The ONE was officially announced on September 23, 2019.

Trivia

 * Some distributor websites denote the ULTRA series as Project X.
 * Interestingly, the ONE, TWO, THREE, FOUR, FIVE, and SEVEN are known to physically exist, but not the SIX.