[DOCS] Added coming qualifiers in changelog

docs/CHANGELOG.asciidoc

@@ -3,7 +3,7 @@
 
 [partintro]
 --
-// To add a release, copy and paste the placeholder text at the bottom
+// To add a release, copy and paste the template text 
 // and add a link to the new section. Note that release subheads must
 // be floated and sections cannot be empty.
 
@@ -20,9 +20,48 @@ This section summarizes the changes in each release.
 
 --
 
+////
+// To add a release, copy and paste the following text,  uncomment the relevant
+// sections, and add a link to the new section in the list of releases at the
+// top of the page. Note that release subheads must be floated and sections
+// cannot be empty.
+// TEMPLATE:
+
+// [[release-notes-n.n.n]]
+// == {es} n.n.n
+
+//[float]
+[[breaking-n.n.n]]
+//=== Breaking Changes
+
+//[float]
+//=== Breaking Java Changes
+
+//[float]
+//=== Deprecations
+
+//[float]
+//=== New Features
+
+//[float]
+//=== Enhancements
+
+//[float]
+//=== Bug Fixes
+
+//[float]
+//=== Regressions
+
+//[float]
+//=== Known Issues
+
+////
+
 [[release-notes-7.0.0]]
 == {es} 7.0.0
 
+coming[7.0.0]
+
 [float]
 [[breaking-7.0.0]]
 === Breaking Changes
@@ -41,6 +80,9 @@ Machine Learning::
 
 * <<remove-http-enabled, Removed `http.enabled` setting>> ({pull}29601[#29601])
 
+//[float]
+//=== Breaking Java Changes
+
 [float]
 === Deprecations
 Monitoring::
@@ -53,12 +95,6 @@ Security::
 mappings, get field mappings, and field capabilities API are now only the
 ones that the user is authorized to access in case field level security is enabled.
 
-//[float]
-//=== Breaking Java Changes
-
-//[float]
-//=== Deprecations
-
 //[float]
 //=== New Features
 
@@ -78,12 +114,27 @@ written to by an older Elasticsearch after writing to it with a newer Elasticsea
 
 Fix NPE when CumulativeSum agg encounters null value/empty bucket ({pull}29641[#29641])
 
+//[float]
+//=== Regressions
+
 //[float]
 //=== Known Issues
 
 [[release-notes-6.4.0]]
 == {es} 6.4.0
 
+coming[6.4.0]
+
+//[float]
+[[breaking-6.4.0]]
+//=== Breaking Changes
+
+//[float]
+//=== Breaking Java Changes
+
+//[float]
+//=== Deprecations
+
 [float]
 === New Features
 
@@ -116,35 +167,19 @@ Machine Learning::
 
 * Account for gaps in data counts after job is reopened ({pull}30294[#30294])
 
-[[release-notes-6.3.1]]
-== Elasticsearch version 6.3.1
-
-//[float]
-//=== New Features
-
-//[float]
-//=== Enhancements
-
-[float]
-=== Bug Fixes
-
-Reduce the number of object allocations made by {security} when resolving the indices and aliases for a request ({pull}30180[#30180])
-
 //[float]
 //=== Regressions
 
 //[float]
 //=== Known Issues
 
-// To add a release, copy and paste the following text,  uncomment the relevant
-// sections, and add a link to the new section in the list of releases at the
-// top of the page. Note that release subheads must be floated and sections
-// cannot be empty.
+[[release-notes-6.3.1]]
+== Elasticsearch version 6.3.1
 
-// [[release-notes-n.n.n]]
-// == {es} n.n.n
+coming[6.3.1]
 
 //[float]
+[[breaking-6.3.1]]
 //=== Breaking Changes
 
 //[float]
@@ -159,8 +194,10 @@ Reduce the number of object allocations made by {security} when resolving the in
 //[float]
 //=== Enhancements
 
-//[float]
-//=== Bug Fixes
+[float]
+=== Bug Fixes
+
+Reduce the number of object allocations made by {security} when resolving the indices and aliases for a request ({pull}30180[#30180])
 
 //[float]
 //=== Regressions