Scientists have successfully produced and trapped Antimatter hydrogen. They have managed to keep it in a magnetic bottle. In the past the Antimatter hydrogen has managed to leak out and get annihilated. This is the first time that any degree of long term storage of antimatter atoms has been achieved.
The importance of this is that real long term storage of antimatter atoms is need if antimatter is ever going to be used as an energy source. While the math of a real warp drive is now in place, like it’s Star Trek counter part only antimatter has any hope of providing the needed energy and long term storage of antimatter atoms beings this a step closer.