It seems like the devs are working hard and they plan to bring new trees to the games very soon. From what we digg up its seems that there will be 3 new trees: Lemon, Milk and Bamboo.
For now we don't know what is the level that they will be implemented but it will probably be a high one 70+... And the Milk tree will probably be a prize at the Wheel of Fortune or maby at the upcoming Valentine's Day Event.... or who knows it can be a prize at the Renzo Traveling Fair... who knows :)

Anyway, enough talk... here are some pictures withe each tree:


The Lemon tree:






The Milk Tree - looks similar to the egg tree


  
The Bamboo Tree