I played the Pre-Alpha version of PVZ3 from Google Play. If they don’t spoil the game with donations and finish the game normally, then everything will be more than normal.
In the meantime, there is a map with buildings on it (for upgrades) and separate battles from 2 levels. No sunflowers planted. Portrait screen mode because of this. There is not even a career mode (story) yet.
So far I see the game as a mixture of the first and second.