So Cruise is dead and ressurected

I definitely wasn't expecting him to be dead.

Also the way the director is talking, his character isn't the most noble, either:

"I?ll tell you that he is an amoral, absolutely-out-for-himself guy. I always find stories most interesting when you put a gun in the hands of someone who should absolutely not have one. Tom, both as a movie star and a great actor, has played some of the more morally complicated roles in the last 30 years."

http://www.ew.com/article/2016/12/05/the-mummy-tom-cruise-trailer-alex-kurtzman?xid=entertainment-weekly_socialflow_twitter

That was the weirdest part about the trailer for me. I hope there's a within-the-universe explanation like he touched the mummy or the tomb or whatever.

It's also funny how he has no damage to his body, no missing limbs and his hair is perfect. WTF?

Maybe he becomes a vampire

Im assuming its a Van Helsing thing since he is making that movie.