Update Trace.md

Author: Salakar

docs/perf-mon/reference/Trace.md

@@ -1,6 +1,6 @@
 # Trace
 
-?> **Upcoming Change:** This implementations API is likely to change in `v5.1.0` to convert all Trace / HttpMetric methods (except start & stop) to be synchronous JS side methods. The API implemented currently is an initial draft to allow early access.
+?> **Upcoming Change Notification:** This implementations API is likely to change in `v6.0.0` to convert all Trace / HttpMetric methods (except start & stop) to be synchronous JS side methods. The API implemented currently is an initial draft to allow early access.
 
 > Once a trace has been started and stopped, you cannot re-start it in the same app lifecycle.