John Cena is not advertised for WWE live events following the Royal Rumble pay-per-view event next month. Cena will not be working on any of the live events from January 29th until the WWE overseas tour of Germany that kicks off on February 10th.
As noted, Cena is being advertised for the December 28th RAW in Brooklyn, NY at the Barclays Center and that will be his return to WWE television.
Cena was originally listed for the 12/19 house show at The Forum in Los Angeles but he is no longer listed. Cena has been busy while he's been away from WWE. Production for his reality show will be wrapping up soon and he's also doing media rounds to promote Amy Poehler and Tina Fey's "Sisters" movie.