L’Arc~en~Ciel has announced that they will be holding two performances in Tokyo Dome titled “LIVE 2018 L’ArChristmas” on December 19th and 20th.
A special website was for the Christmas live event can be found here, along with a teaser promoting the live event.
UPDATE:
TETSUYA posted the “LIVE 2018 L’ArChristmas” teaser on his Instagram: