The SimCity 7.0 update is on the way. This month, the update will bring your city some traffic updates including the ability to raise and lower roads to build bridges and tunnels, as demonstrated by Lead Gameplay Scripter Guillaume Pierre.
In addition, the update will allow you to plant trees. The new mechanic was inspired by a mod, and includes three tree types that grow roadside and four that can flourish anywhere, according to a series of tweets from Pierre.
The details of the update was also outlined by the software engineer, Alexander Harkness in a recent SimCity blog post.