There should be a place for us to see what is added in each new update like other games. I think @Angussymebobymeboyus made a similar post here. It would look something like this:
v1.3.2 Update Notes
- Added “Sweezians(Mythical)”
- Added “Cometeor(Legendary)”
- Progress can now be transferred between devices
- Fixed bug where bro mon won’t spawn
- Changed Cloudphant(Rare) to Cloudphant(Mythical)