New Flyers are moving around the system…again

In the past week or so, 5400s appeared on Midvale routes and 5600s appeared on Callowhill and Frankford/Comly routes.  The kicker is that 5837H was running on the 21 this morning.  Is this a sign of things to come with the new 2008 New Flyer hybrids arrive? Stay tuned for more details.