I just registered for the free trial of Dynamics 365 and looking forward to explore the new functionalities.
Once you register for the free trial you can indicate with apps you want to add to your trial with the language settings and currency settings.
After registration you will be automatically forwarded to the trial environment, see screenshot below:
The navigation menu to the other applications can be found in the left corner above.
The Dynamics 365 button is showing the App Menu
The CRM Modules Navigation is still the same as in the previous version of Microsoft Dynamics CRM 2016.