Broncos announce they have waived Mitchell Henry and signed TE Richard Gordon.
— Nicki Jhabvala (@NickiJhabvala) October 14, 2015
The Broncos website has a brief writeup here.
Most likely, the Broncos brought in Gordon because he can play fullback. Given that Gordon is younger than James Casey (who they released this past weekend), the Broncos might believe Gordon might be worth looking at for the long term.
It remains to be seen if Henry will be added to the practice squad, but the Broncos would have to make a spot available.