In Dynamics 365 we have new visual designer for Business Rules (and Business Process Flows).
Condition and Actions can be added through Add button or dragged and dropped
Conditions and Action can be copied, cut. delete and pasted in designer window.
Snapshot creates a snapshot of the business rules. (image file with png extension)
Conditions can be defined in the Properties window
Still we can only specify either Add or OR conditions
Changing it to OR replaces AND condition
May be in future release we’d have that feature as well.
Hope it helps..