Release 1.33.0 (#4034)

May 2024 release.

Important changes:

* Mark exemplars as stable (#3870)
* Mark synchronous gauge as stable (#4019)
* Record Links with empty/invalid SpanContext (#3928)

CHANGELOG.md

@@ -11,15 +11,39 @@ release.
 
 ### Traces
 
+### Metrics
+
+### Logs
+
+### Events
+
+### Resource
+
+### OpenTelemetry Protocol
+
+### Compatibility
+
+### SDK Configuration
+
+### Common
+
+### Supplementary Guidelines
+
+## v1.33.0 (2024-05-09)
+
+### Context
+
+### Traces
+
 - Links with invalid SpanContext are recorded.
   ([#3928](https://github.com/open-telemetry/opentelemetry-specification/pull/3928))
 
 ### Metrics
 
 - Change the exemplar behavior to be on by default.
   ([#3994](https://github.com/open-telemetry/opentelemetry-specification/pull/3994))
-- Add name suggestion for option to apply resource attributes as metric attributes in Prometheus exporter.
-  ([#3837](https://github.com/open-telemetry/opentelemetry-specification/pull/3837))
+- Use normative language for exemplar default aggregations.
+  ([#4009](https://github.com/open-telemetry/opentelemetry-specification/pull/4009))
 - Mark Exemplars as stable.
   ([#3870](https://github.com/open-telemetry/opentelemetry-specification/pull/3870))
 - Mark synchronous gauge as stable.
@@ -28,7 +52,7 @@ release.
 ### Logs
 
 - Allow implementations to export duplicate keys in a map as an opt-in option.
-  ([#3938](https://github.com/open-telemetry/opentelemetry-specification/pull/3938))
+  ([#3987](https://github.com/open-telemetry/opentelemetry-specification/pull/3987))
 
 ### Events
 
@@ -38,6 +62,9 @@ release.
 
 ### Compatibility
 
+- Add name suggestion for option to apply resource attributes as metric attributes in Prometheus exporter.
+  ([#3837](https://github.com/open-telemetry/opentelemetry-specification/pull/3837))
+
 ### SDK Configuration
 
 - Clarify syntax for environment variable substitution regular expression