Release-Strategy.md

@@ -23,6 +23,18 @@ All release branches will have at least a ".0" patch, but may gain additional ta
 -  [R3 Milestone 4 deliverables - 0.7.0](https://community.opengroup.org/osdu/governance/project-management-committee/-/wikis/Release-0.7-Tagging-Notes)
 -  [R3 Milestone 5 deliverables - 0.8.0](https://community.opengroup.org/osdu/governance/project-management-committee/-/wikis/Release-0.8-Tagging-Notes)
 
+## Development timeline for milestones
+Each OSDU milestone starts with about 1.5 months of development, following the code tagging process, deployment into pre shipping environment by CSP teams, and validation in pre shipping environment. 
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+The code freeze date is important milestone for development teams. Below is the current planned date for code freeze for upcoming milestones: 
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+- M5: 
+- M6: end of May - May 28, 2021
+- M7: mid of Jul - Jul 16, 2021
+- M8: end of Aug - Aug 27, 2021
+
 # Creation Process
 
 ## Creating a new Release