You'll be hearing the 90-107 numbers soon. They will move the CRJ's elsewhere over a few years while shrinking through attrition to get through the next 3-4 years of the staffing shortage. Then the 90 options come back and you become 180-197 aircraft fleet. The really long term plans are to grow Eagle to 270 jets.
Under the AIP, they would have replaced enough jets to keep you at the 170 fleet minimum, but would have still ended up 180-197.