The official Nintendo Mobile YouTube channel has released a new reveal trailer for Byleth: Tested Professor! You can watch it here:
You can view the Japanese reveal video here.
Byleth’s skills were previously revealed within an in-game notification, but now they are here in video format.
Information on when male Byleth is available was also posted previously, but to recap, he will be a part of the upcoming Mythic banner which begins on the 31st of July, 7:00am UTC, as one of the three red focus Heroes. He is not a Mythic Hero; the upcoming Mythic Hero is still yet to be revealed.
Purchasers of Fire Emblem: Three Houses are able to obtain a free copy of male Byleth for their Fire Emblem Heroes account. There are detailed instructions on exactly how to do this on the official Fire Emblem Heroes website. Link is here. You have until the 29th of June, 2020, so there’s no need to rush.
If you log in to Heroes between today and the 9th of August, 6:59am UTC, you can pick up 5 Orbs for yourself in celebration of Thee Houses’ release.