A recent tweet from a credible Genshin Impact leaker revealed a video featuring the main character Lumie with the new Electro element. The new element will be obtainable in the upcoming Inazuma udate.
Acquiring a new element with the main character, also known as the Traveler or Lumie/Aether, is one of the most exciting things when a new region arrives.
The Traveler isn't one of the strongest characters in the game at the moment. Many players and tier lists consider him to be either C or D tier. He can equip two different elements at the moment, Anemo and Geo. Each of the elements represents the region they were acquired in, Anemo for Monstadt and Geo for Liyue.
With the upcoming introduction of the new region Inazuma, the main character could make a return to many players' main parties. The representative element of Inazuma is Electro which means that the traveler will be able to use the new element fairly soon.
A recent tweet posted by a credible Genshin Impact leaker called abc64 revealed a gameplay video featuring Lumie with the Electro element.
Thanks to Honey Hunter World we have some additional information about Electro Lumie/Aether.
Even though the translation seems a bit unclear at the moment, it looks like the Elemental Skill is called Raikage Sword. The skill will release three electro shadows that damage the opponents. The skill will also leave a mark on the target which by consumption will restore elemental energy as well as increase the efficiency of skill recharge for a couple of seconds.
The Elemental Burst is called Thunderstorm and it apparently gives an electro shield that, similar to Beidou. The shield will infuse your basic attacks with electro which will trigger elemental reactions and deal bonus damage. This burst will also have some additional effects such as recharging energy.