While this may be something or it may be nothing, it’s worth noting that John Cena is no longer being advertised for WWE Survivor Series on November 20, 2016 in Toronto, Ontario, Canada. Cena is currently away from WWE to film season two of American Grit, a non-WWE related show in which Cena operates as host and executive producer.
John’s WWE schedule is expected to be limited for the rest of the year, however, it had been understood that he would work Survivor Series next month.
There is the possibility with the show being headlined by Brock Lesnar vs. Bill Goldberg WWE may have decided they don’t need Cena back or that they don’t want to commit to anything yet. Cena considers himself a part-time WWE star at this stage in his career.