CHANGELOG.md in aws-sdk-ec2-1.338.0 vs CHANGELOG.md in aws-sdk-ec2-1.339.0

@@ -1,7 +1,12 @@
 Unreleased Changes
 ------------------
 
+1.339.0 (2022-09-29)
+------------------
+
+* Feature - u-3tb1 instances are powered by Intel Xeon Platinum 8176M (Skylake) processors and are purpose-built to run large in-memory databases.
+
 1.338.0 (2022-09-23)
 ------------------
 
 * Feature - Letting external AWS customers provide ImageId as a Launch Template override in FleetLaunchTemplateOverridesRequest
 
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