According to Front5151 on the boards, #8222-8229 has been spotted in the Germantown depot Parking lot. As also reported, 8231-8239 were spotted at a Detroit Diesel facility in Minneapolis getting work done. Photos of these buses are posted on the Chicagobus.org forums.
http://forum.chicagobus.org/index.php?showtopic=629&st=480&p=20635&#entry20635
Photo-Right: Taken by MVTArider on the Chicagoforums