Copied and pasted this from the Outdoor Wire. I personally would have much rather seen them introduce something similar to the 9x39, guess I'll have to wait.
"Yesterday, the announcement of a new "30 Caliber Hunting System"- a new Remington R-15 rifle chambered in the brand-new 30 Remington AR cartridge. The initial offerings include a 125 grain Core-Lokt PSP that provides 308 Winchester performance levels and deer hunting capabilities out to 350 yards and will fit a full-length AR15 magazine .
You see it here first. Remington's new 30 Remington cartridge (left) next to a 223 and 308 Winchester
The 30 Remington was developed after the existing 6.8 Remington SPC and 22-250 Remington didn't deliver enough case capacity to meet velocity requirements. The 450 Bushmaster, however, has passed the muster and has been modified to a cartridge with the same overall length as the 223 Remington, fits modified 450 Bushmaster magazines and has a case capacity of 44 grains and delivers a velocity of 2800 feet per second.
The new shell will be available in three initial loadings: AccuTip BT, Core-Lokt PSP and a UMC MC the company describes as the "practice ammunition" for the hunter or shooter who doesn't want the hunting round characteristics - or price. The two hunting rounds are 125 grain bullets; the full-metal rounds are 123 grain. Pricing is currently listed at $35.99 for the AccuTip, $26.49 for the Core-Lokt, and $18.99 for the FMJ.
Ballistically, the 30 Remington Accutip (125 grain) matches up closely with the 308 Winchester 165 grain out to three hundred yards and velocity and trajectory remain comparable out to 400."
