They are definitely ramping up the marketing even more than usual. Maybe it will actually happen sometime this year.
I'm guessing the "countdown to shot show" website indicates they will project another release date at said show; one that may actually be hitable (fingers crossed?). After that date you can wait for a year for prices to come down to MSRP, or pay 4-8K if you gotta-have-it-now, if the SCAR is any indication.
If they make it in 6.8 and different barrels available, they will have already one-upped the SCAR in terms of having their modular rifle actually be modular.
1:9 twist? When I really want to shoot 77gr, I've got a bunch of 1:7 ARs already, so no big deal as far as I'm concerned. If they are open to making barrels and there is demand for 1:7, why wouldn't they make one down the road anyway?
$2300 is well beyond the original projected price, at least way back when it was Magpul's design.
I would prefer to buy it as a Remington rather than a Bushmaster. Like usual, I'll just wait a bit after any release and see what pans out. Based on the speculation available today, however, between an evenly priced ACR and SCAR, I'd take the SCAR first.