Microsoft has released a new version of Dynamics CRM online called Dynamics 365 v 9.0

You can try it now by clicking on this link

https://portal.office.com/partner/partnersignup.aspx?type=Trial&id=2781de52-fe91-41de-b3f5-46e832b092cb&msppid=585256

The new Dynamics 365 has new great features and a new redesigned user interface which server performance has been improved like never before. Some of the new features are the addition of virtual entities, multiple option sets, auto numeric fields, new unified interface.