Found this on Rock Island Website. Also it was listed on Centerfire Systems Website for $399.99. Supposedly they had a demo model and they accidentally posted it for sale. It will probably ship at the same time XT22 will, in February.
ROCK ISLAND ARMORY MIG 22
Caliber .22 LR
Action Semi-Automatic
Capacity 15rd. Magazine
Barrel 18"

Rock Island Website Info
Centerfire Systems website info

The Mig 22 Target Model features 100% billet machined construction
from T6 aircraft aluminum and chrome moly tool steel.
SPECIAL FEATURES:
• One-piece billet machined 6061-T6 aircraft aluminum mono-receiver with
a unique captured recoil system for easy disassembly and cleaning.
• Free floated match grade barrel guaranteed to shoot .700 at 50 meters.
• Take down style barrel and buttstock assemblies for quick breakdown of the rifle.
• Performance designed wire cut tool steel internals for a match style trigger right out of the box. (Not cast and stamped.)
SPECIFICATIONS:
Caliber: .22 Long Rifle (High Velocity)
Action: Semi-automatic Blow Back
Capacity: 15rd magazine std.
Barrel Length: 18" Heavy Barrel
Weight Empty: 8 lbs.
Overall Length: 35"
Accuracy: .700 at 50 Meters
Trigger Weight: 2 lbs. Short Travel
FFL required.
Cannot be sold to residents of California.