Answered Mystery box prizes

[VEER1234]

 

As of November 1st 2019, the Pokémon pool of Mystery Boxes will no longer be exclusively one Pokémon.
Instead, every past event Pokémon will be included and as events are rolled out and end, that Pokémon will join the Mystery Box Pokémon 

I have a question that will unrealeased mystery box Pokemon like Arceus fighting, arceus rock be received by using mystery box Or only the Pokemon released for the mystery box till 1st November 2019 be received

[omg414]

Yes all the previous events will be available on the mystery boxes from 1st November 2019 except the seasonals like christmas,Halloween will not be there..

Even the future events will join the mystery box after the event is over

 

hope this helps

 

All the pokes like volcanions and zygrade forms which were part of monthly pokemon before will be back!

Edited August 1, 2019 by omg414
addition

[Auke1993]

Based on what you quoted, it suggests that future event-exclusive Pokémon will join the Mystery Boxes once their respective event has ended.