Murdoc spotted a video where a Remington VC referred to the ACR, formerly Magpul Masada, as the Remington ACR. It looks like the rifle, or at least the marketing, has been transfered from Bushmaster to the military devision of their sister company Remington.
I found this Remington promotion material online.
It says that the rifle will be available in 5.56mm NATO, 6.8mm SPC and 6.5mm Grendel.
There is no indication that Remington will be offering civilian sales.