SonarQube 5.6 is the new LTS release, hence there are lots of changes.
The first step where you might panic is when you launch it for the first time, you will find this:
ce is the Compute Engine, a process for data aggregation on the server.
Don’t worry, Process[ce] will eventually go up after you run http://<your SonarQube>/setup and migrate to 5.6.
Then, this at build time:
SonarQube comes with no plugins out-of-the-box! Remember to bring yours from the old installation and update them after the system check..