New plants (Minecraft)?

Do you think Mojang will add more plants of all kinds (e.g. Fir trees or cherry trees) to Minecraft?

Just take a look at the biome votes. We'll also get new plants in the Lush Caves in the next update.

That looks great! I'm really looking forward to that. I just find that the flora in Minecraft is not that varied (only 6 trees (including the one from the new update)). I would be very happy if there were more real plants (more trees, more useful plants or smaller plants). What are my chances of being satisfied in the future?

Let's just take what was already under discussion:

Baobabs
Palm trees
New cacti
Steppe roller

The berry bushes were introduced last. I can't tell you if there's anything else to come.

And when could one expect the plants mentioned?

I can't tell you whether they will really ever come. The fact is, however, that they were up for discussion (the community voted for something else, for example for the berry bushes).