The Internal serves both resorts and Disney Springs. I've been on it a couple times. From the bus/transportation section of portorleans.org:
Internal Shuttle
The Disney Springs service is the only exception to the above rule, calling first at French Quarterand then Riverside South, West, North and East, then finally adding an extra stop back at French Quarter before heading back to Disney Springs. The marquees on the buses will update to read “Internal Resort Shuttle” upon entering the resort area and then switch to read either “Disney Springs / Typhoon Lagoon” prior to 1pm, or just “Disney Springs” for the rest of the day.
Just checked with a friend who was there last week, it's still running. Like POR/POFQ it services Disney Springs too.