Adds whatsnew

Author: Robert Fekete

content/docs/whats-new/_index.md

@@ -3,6 +3,11 @@ title: What's new
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+## Version 6.2
+
+- Logging operator now uses a custom Elasticsearch gem that supports older Elasticsearch versions as well.
+- Added missing paths to performance profiling (pprof).
+
 ## Version 6.1
 
 - New Fluentd output to send logs into {{% xref "/docs/configuration/plugins/outputs/rabbitmq.md" %}}.