Recommended ElasticSearch version for production upgrade?

Elastic Stack Elasticsearch
1

hi Team,
we are using elasticsearch 2.1.0 standalone setup in our production servers from Aug-2016.
we want to upgrade our elasticsearch software from 2.1.0 to latest 5.x version soon.
i have seen many internal build releases in 5.x series.
• 5.2.2 Release Notes
• 5.2.1 Release Notes
• 5.2.0 Release Notes
• 5.1.2 Release Notes
• 5.1.1 Release Notes
• 5.1.0 Release Notes
• 5.0.2 Release Notes
• 5.0.1 Release Notes
• 5.0.0 Combined Release Notes
• 5.0.0 GA Release Notes
• 5.0.0-rc1 Release Notes
• 5.0.0-beta1 Release Notes
• 5.0.0-alpha5 Release Notes
• 5.0.0-alpha4 Release Notes
• 5.0.0-alpha3 Release Notes
• 5.0.0-alpha2 Release Notes
• 5.0.0-alpha1 Release Notes
• 5.0.0-alpha1 Release Notes (Changes previously released in 2.x)
Can any one of you please recommend the stable version to be consider for upgrade?

2

5.2.2 is the one to go for.

3

Elasticsearch 5.2.2: Is GA/Beta/RC/Alpha release build?

4

It's GA.

We only release alpha/beta/RC for major releases of the stack.

5

Thanks for update.
We are proceeding POC on v5.2.2

6

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