Cameras are currently rolling on Avengers: Doomsday in London, and we have some new details on what is believed to be the X-Men's introduction to Marvel Studios' next big event movie.

We've known that these first scenes being filmed will feature the X-Men for a while, and even though no cast members have been photographed, we have seen evidence of a destructive battle on the grounds of the X-Mansion, with Sentinel limbs strewn across the ground.

According to scooper MTTSH, this action sequence will be the first time we see the mutant heroes in Doomsday, and the battle - which is also rumored to feature members of The Avengers - will be "similar to that of X-Men '97, with them fighting the Sentinels. That way, we are introduced to the team and their powers."

Of course, fans of the 20th Century Fox X-Men movies will already be familiar with this incarnation of the team.

Previous rumors have claimed that Doomsday will also introduce some cast members from the planned X-Men reboot, but more recent reports have refuted this. There's a chance they might show up in Avengers: Secret Wars, but any plans that may have been in place have likely been shaken-up due to both Avengers films being hit with significant release date delays.

@UnBoxHD has also shared a new video from the set. It's not particularly revealing, but does give us a nice birds-eye view of the battleground.

Both Doomsday and Secret Wars will be directed by the Russo brothers, who also make their MCU return after helming Captain America: The Winter Soldier, Captain America: Civil War, Avengers: Infinity War and Avengers: Endgame.