This information was revealed towards the end of the recent Dragalia Lost anniversary presentation. According to the director, Yuji Okada, the Mega Man: Chaos Protocol event "featuring Mega Man" will arrive this Winter. Okada will share more information about this special event on 1st October.
View the full presentation below. The Mega Man announcement is the final one and takes place around the 13-minute mark:
Have you tried out Dragalia Lost on mobile yet? Did you ever expect to see Mega Man appear in a game like this? Leave a comment below.