Bb8 mythic event?

We won't know until the event is live in the game. We should expect a HF/update this week to push this data out, maybe early next week

Thanks

Both legendary and mythic event have been announced fot he 15th.
Not seeing the mythic in the game yet. Only Hero‘s Journey.

https://forums.galaxy-of-heroes.starwars.ea.com/discussion/162743/content-update-3-13-2018

Edit: it show‘s up now.