Yes, all East Coast destinations are listed as E170. Remember, the A319s are being swapped for the five E190s currently on-line. The only E190s you should see scheduled will be to rotate the planes through Denver and Kansas City.
With the remaining 717s being removed from service early next month, Midwest had to come-up with a temporary schedule that could be flown based on aircrfat that would be reliably available.
More Airbus and E-Jets will be added to the fleet in the coming months and the schedules will be up-dated accordingly. Flights to BOS, LGA, and DCA will almost certainly be up-gauged.