According Ben Heck's twitter feed from last few months, the last episode of Ben Heck should have been a portable project featuring a sketch with PieFace. There was "Raspberry Pi No HDMI Revisited - Redesign!", but didn't have PieFace, musical number nor that sentimental very last shot. The Ben Heck Show just did fade away when new hosts came.
Few evidence:
Working on the musical number for the last episode of @thebenheckshow PieFace Shall Return! #pieface
https://twitter.com/benheck/status/986031594816331777
Setting up the very last shot of @BenHeckShow
https://twitter.com/benheck/status/1000193554533232641
Still working on the final @BenHeckShow skit. Should be quite the thing!
https://twitter.com/benheck/status/1002220352364335105
Working for the 3rd weekend in a row on the final @BenHeckShow project. It will be my greatest portable ever! (fingers crossed) Might as well go out with a bang.
https://twitter.com/benheck/status/1005909997052661760
There certainly was no bang...
(this editor made weird mess, I edited this and tried to remove all formatting if it helps.)