https://www.federalpremium.com/30supercarry.html

Federal has a new cartridge out called the 30 Super Carry. 30 caliber, 100 grain bullet, shot at 1150-1200 FPS. Holds 2 extra rounds per mag over a 9mm with less recoil.

I'm not viewing this as a 9mm replacement but i think it would be a great 380 replacement for sub compact guns.