Milestone: Product Release Milestone
At the end of the transition phase is the fourth important project milestone, the Product Release Milestone. At this point, you decide if the objectives were met, and if you should start another development cycle. The Product Release Milestone is the result of the customer reviewing and accepting the project deliverables.
Main Description
Properties
Predecessor
Multiple Occurrences
Event Driven
Ongoing
Optional
PlannedYes
Repeatable
Required Results 
Usage
Usage GuidanceIn some cases this milestone may coincide with the end of the inception phase for the next cycle.