CHANGELOG.md in aws-sdk-ec2-1.242.0 vs CHANGELOG.md in aws-sdk-ec2-1.243.0

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+ new

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 Unreleased Changes
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+1.243.0 (2021-06-15)
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+
+* Feature - EC2 M5n, M5dn, R5n, R5dn metal instances with 100 Gbps network performance and Elastic Fabric Adapter (EFA) for ultra low latency
+
 1.242.0 (2021-06-11)
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 * Feature - Amazon EC2 adds new AMI property to flag outdated AMIs
 
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