With the Royal Rumble coming up this Sunday, it also means that WWE kicks off their WrestleMania season this weekend too and build up to all the events that take place during that week.One of the events which takes place during WrestleMania week is the Hall of Fame ceremony, and it's usually at this time of the year as well that WWE reveals the top superstar to be inducted and immortalized.However, despite WWE usually having a grand reveal for said superstar, they may have accidentally revealed which superstar will be this year's headliner.WWE sent out an email this week to their Network subscribers promoting the addition of Superstars to the service. Here, they listed Hall of Famers which will be featured.The Hall of Famers they included on the email are Shawn Michaels, Ric Flair, and The Undertaker?!?

The Deadman has been rumoured to be one of the members of the 2019 Hall of Fame Class, so while the addition isn't surprising, the fact WWE allowed this to possibly slip out in their own emails is.

Since the mistake, WWE has corrected and re-sent the email, but the error has already got WWE fans talking.

The Undertaker is a very deserving superstar to be inducted into the Hall of Fame and, if it isn't this year, it's only a matter of time before he is given the immortalization.

Throughout his career, The Phenom has been a four-time WWF/E Champion, a three-time World Heavyweight Champion, a WWF Hardcore Champion, and a six-time WWF World Tag Team Champion.

The Undertaker has headlined many PPVs for WWE, including making his name at WrestleMania.

He has headlined four WrestleManias, and has one of the best records at the show itself, standing at 24-2 after beating John Cena at the event last year.

The Deadman hasn't been seen in the WWE since he wrestled alongside Kane as The Brothers of Destruction against Triple H and Shawn Michaels of D-Generation X at Crown Jewel in November last year.

Fingers crossed The Undertaker is inducted into the WWE Hall of Fame this year, but it looks as though WWE has already made the announcement by mistake.