You can now create a new Map with noise generation!

This will help having a better base terrain to work with. A lot of settings can be tweaked and you can even change the seed to generate a random variation of the exact same settings(some people might know this from Minecraft). There are a few presets shipped and you can of course save your own ones as well.

This Feature is for rather advanced users and it's nearly impossible to provide a proper Guide for this. However, if you want to get more into this, simply try around or even take a look here.

Be aware that noise generation can take some time depending on the complexity of your settings and the desired Map size!